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Finding the Fourth Proportional to 10,487.36, 15,732.48 and 3,560

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Solution

The fourth proportional to 10,487.36, 15,732.48 and 3,560 is: 5,340.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.36 : 15,732.48 = 3,560 : x
  2. Step 2: Convert to fraction form
    10,487.36/15,732.48 = 3,560/x
  3. Step 3: Cross multiply
    10,487.36x = 15,732.48 × 3,560
  4. Step 4: Simplify right side
    10,487.36x = 56,007,628.80
  5. Step 5: Solve for x
    x = 56,007,628.80/10,487.36
  6. Step 6: Final answer
    x = 5,340.49

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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.