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Finding the Fourth Proportional to 9,385.52, 12,953.36 and 5,406.24

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Solution

The fourth proportional to 9,385.52, 12,953.36 and 5,406.24 is: 7,461.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,385.52 : 12,953.36 = 5,406.24 : x
  2. Step 2: Convert to fraction form
    9,385.52/12,953.36 = 5,406.24/x
  3. Step 3: Cross multiply
    9,385.52x = 12,953.36 × 5,406.24
  4. Step 4: Simplify right side
    9,385.52x = 70,028,972.97
  5. Step 5: Solve for x
    x = 70,028,972.97/9,385.52
  6. Step 6: Final answer
    x = 7,461.38

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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.