Home / 8,762.31-13,138.61-2,915.73

Finding the Fourth Proportional to 8,762.31, 13,138.61 and 2,915.73

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Solution

The fourth proportional to 8,762.31, 13,138.61 and 2,915.73 is: 4,371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.31 : 13,138.61 = 2,915.73 : x
  2. Step 2: Convert to fraction form
    8,762.31/13,138.61 = 2,915.73/x
  3. Step 3: Cross multiply
    8,762.31x = 13,138.61 × 2,915.73
  4. Step 4: Simplify right side
    8,762.31x = 38,308,624.76
  5. Step 5: Solve for x
    x = 38,308,624.76/8,762.31
  6. Step 6: Final answer
    x = 4,371.98

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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.