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Finding the Fourth Proportional to 28,562.76, 42,845.56 and 7,502.90

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Solution

The fourth proportional to 28,562.76, 42,845.56 and 7,502.90 is: 11,254.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,562.76 : 42,845.56 = 7,502.90 : x
  2. Step 2: Convert to fraction form
    28,562.76/42,845.56 = 7,502.90/x
  3. Step 3: Cross multiply
    28,562.76x = 42,845.56 × 7,502.90
  4. Step 4: Simplify right side
    28,562.76x = 321,465,952.12
  5. Step 5: Solve for x
    x = 321,465,952.12/28,562.76
  6. Step 6: Final answer
    x = 11,254.72

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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.