Home / 6,211.20-9,316.80-2,315.10

Finding the Fourth Proportional to 6,211.20, 9,316.80 and 2,315.10

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Solution

The fourth proportional to 6,211.20, 9,316.80 and 2,315.10 is: 3,472.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,211.20 : 9,316.80 = 2,315.10 : x
  2. Step 2: Convert to fraction form
    6,211.20/9,316.80 = 2,315.10/x
  3. Step 3: Cross multiply
    6,211.20x = 9,316.80 × 2,315.10
  4. Step 4: Simplify right side
    6,211.20x = 21,569,323.68
  5. Step 5: Solve for x
    x = 21,569,323.68/6,211.20
  6. Step 6: Final answer
    x = 3,472.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.