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Finding the Fourth Proportional to 9,111, 13,665.28 and 3,560.48

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Solution

The fourth proportional to 9,111, 13,665.28 and 3,560.48 is: 5,340.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111 : 13,665.28 = 3,560.48 : x
  2. Step 2: Convert to fraction form
    9,111/13,665.28 = 3,560.48/x
  3. Step 3: Cross multiply
    9,111x = 13,665.28 × 3,560.48
  4. Step 4: Simplify right side
    9,111x = 48,654,956.13
  5. Step 5: Solve for x
    x = 48,654,956.13/9,111
  6. Step 6: Final answer
    x = 5,340.24

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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.