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Finding the Fourth Proportional to 9,912.72, 14,869.08 and 2,987.22

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Solution

The fourth proportional to 9,912.72, 14,869.08 and 2,987.22 is: 4,480.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.72 : 14,869.08 = 2,987.22 : x
  2. Step 2: Convert to fraction form
    9,912.72/14,869.08 = 2,987.22/x
  3. Step 3: Cross multiply
    9,912.72x = 14,869.08 × 2,987.22
  4. Step 4: Simplify right side
    9,912.72x = 44,417,213.16
  5. Step 5: Solve for x
    x = 44,417,213.16/9,912.72
  6. Step 6: Final answer
    x = 4,480.83

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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.