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Finding the Fourth Proportional to 6,683.72, 9,224.34 and 3,888.68

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Solution

The fourth proportional to 6,683.72, 9,224.34 and 3,888.68 is: 5,366.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,683.72 : 9,224.34 = 3,888.68 : x
  2. Step 2: Convert to fraction form
    6,683.72/9,224.34 = 3,888.68/x
  3. Step 3: Cross multiply
    6,683.72x = 9,224.34 × 3,888.68
  4. Step 4: Simplify right side
    6,683.72x = 35,870,506.47
  5. Step 5: Solve for x
    x = 35,870,506.47/6,683.72
  6. Step 6: Final answer
    x = 5,366.85

Related Problems

Find fourth proportional to 3,341.86, 4,612.17 and 1,944.34
Half scale
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Double scale
Find fourth proportional to 6,684.72, 9,225.72 and 3,889.68
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.