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Finding the Fourth Proportional to 7,116.66, 10,674.99 and 2,188.22

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Solution

The fourth proportional to 7,116.66, 10,674.99 and 2,188.22 is: 3,282.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,116.66 : 10,674.99 = 2,188.22 : x
  2. Step 2: Convert to fraction form
    7,116.66/10,674.99 = 2,188.22/x
  3. Step 3: Cross multiply
    7,116.66x = 10,674.99 × 2,188.22
  4. Step 4: Simplify right side
    7,116.66x = 23,359,173.24
  5. Step 5: Solve for x
    x = 23,359,173.24/7,116.66
  6. Step 6: Final answer
    x = 3,282.32

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Half scale
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Double scale
Find fourth proportional to 7,117.66, 10,676.49 and 2,189.22
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.