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Finding the Fourth Proportional to 9,965.49, 13,752.12 and 5,489.16

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Solution

The fourth proportional to 9,965.49, 13,752.12 and 5,489.16 is: 7,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,965.49 : 13,752.12 = 5,489.16 : x
  2. Step 2: Convert to fraction form
    9,965.49/13,752.12 = 5,489.16/x
  3. Step 3: Cross multiply
    9,965.49x = 13,752.12 × 5,489.16
  4. Step 4: Simplify right side
    9,965.49x = 75,487,587.02
  5. Step 5: Solve for x
    x = 75,487,587.02/9,965.49
  6. Step 6: Final answer
    x = 7,574.90

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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.