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Finding the Fourth Proportional to 8,280.95, 11,425.70 and 5,254.97

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Solution

The fourth proportional to 8,280.95, 11,425.70 and 5,254.97 is: 7,250.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.95 : 11,425.70 = 5,254.97 : x
  2. Step 2: Convert to fraction form
    8,280.95/11,425.70 = 5,254.97/x
  3. Step 3: Cross multiply
    8,280.95x = 11,425.70 × 5,254.97
  4. Step 4: Simplify right side
    8,280.95x = 60,041,710.73
  5. Step 5: Solve for x
    x = 60,041,710.73/8,280.95
  6. Step 6: Final answer
    x = 7,250.58

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1.5x scale

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.