Home / 8,815.73-13,209.92-5,108.76

Finding the Fourth Proportional to 8,815.73, 13,209.92 and 5,108.76

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Solution

The fourth proportional to 8,815.73, 13,209.92 and 5,108.76 is: 7,655.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.73 : 13,209.92 = 5,108.76 : x
  2. Step 2: Convert to fraction form
    8,815.73/13,209.92 = 5,108.76/x
  3. Step 3: Cross multiply
    8,815.73x = 13,209.92 × 5,108.76
  4. Step 4: Simplify right side
    8,815.73x = 67,486,285.36
  5. Step 5: Solve for x
    x = 67,486,285.36/8,815.73
  6. Step 6: Final answer
    x = 7,655.22

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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.