Home / 8,269.28-12,403.92-5,815.08

Finding the Fourth Proportional to 8,269.28, 12,403.92 and 5,815.08

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Solution

The fourth proportional to 8,269.28, 12,403.92 and 5,815.08 is: 8,722.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,269.28 : 12,403.92 = 5,815.08 : x
  2. Step 2: Convert to fraction form
    8,269.28/12,403.92 = 5,815.08/x
  3. Step 3: Cross multiply
    8,269.28x = 12,403.92 × 5,815.08
  4. Step 4: Simplify right side
    8,269.28x = 72,129,787.11
  5. Step 5: Solve for x
    x = 72,129,787.11/8,269.28
  6. Step 6: Final answer
    x = 8,722.62

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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.