Home / 8,355.31-12,531.56-3,913.44

Finding the Fourth Proportional to 8,355.31, 12,531.56 and 3,913.44

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Solution

The fourth proportional to 8,355.31, 12,531.56 and 3,913.44 is: 5,869.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,355.31 : 12,531.56 = 3,913.44 : x
  2. Step 2: Convert to fraction form
    8,355.31/12,531.56 = 3,913.44/x
  3. Step 3: Cross multiply
    8,355.31x = 12,531.56 × 3,913.44
  4. Step 4: Simplify right side
    8,355.31x = 49,041,508.17
  5. Step 5: Solve for x
    x = 49,041,508.17/8,355.31
  6. Step 6: Final answer
    x = 5,869.50

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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.