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Finding the Fourth Proportional to 8,657.54, 12,913.39 and 7,254.62

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Solution

The fourth proportional to 8,657.54, 12,913.39 and 7,254.62 is: 10,820.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,657.54 : 12,913.39 = 7,254.62 : x
  2. Step 2: Convert to fraction form
    8,657.54/12,913.39 = 7,254.62/x
  3. Step 3: Cross multiply
    8,657.54x = 12,913.39 × 7,254.62
  4. Step 4: Simplify right side
    8,657.54x = 93,681,654.66
  5. Step 5: Solve for x
    x = 93,681,654.66/8,657.54
  6. Step 6: Final answer
    x = 10,820.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.