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Finding the Fourth Proportional to 9,965.28, 13,754.28 and 7,807.52

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Solution

The fourth proportional to 9,965.28, 13,754.28 and 7,807.52 is: 10,776.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,965.28 : 13,754.28 = 7,807.52 : x
  2. Step 2: Convert to fraction form
    9,965.28/13,754.28 = 7,807.52/x
  3. Step 3: Cross multiply
    9,965.28x = 13,754.28 × 7,807.52
  4. Step 4: Simplify right side
    9,965.28x = 107,386,816.19
  5. Step 5: Solve for x
    x = 107,386,816.19/9,965.28
  6. Step 6: Final answer
    x = 10,776.10

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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.