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Finding the Fourth Proportional to 10,334.80, 15,508.80 and 3,760.40

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Solution

The fourth proportional to 10,334.80, 15,508.80 and 3,760.40 is: 5,643.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,334.80 : 15,508.80 = 3,760.40 : x
  2. Step 2: Convert to fraction form
    10,334.80/15,508.80 = 3,760.40/x
  3. Step 3: Cross multiply
    10,334.80x = 15,508.80 × 3,760.40
  4. Step 4: Simplify right side
    10,334.80x = 58,319,291.52
  5. Step 5: Solve for x
    x = 58,319,291.52/10,334.80
  6. Step 6: Final answer
    x = 5,643.00

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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.