Home / 8,623.28-12,909.24-5,325.68

Finding the Fourth Proportional to 8,623.28, 12,909.24 and 5,325.68

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Solution

The fourth proportional to 8,623.28, 12,909.24 and 5,325.68 is: 7,972.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.28 : 12,909.24 = 5,325.68 : x
  2. Step 2: Convert to fraction form
    8,623.28/12,909.24 = 5,325.68/x
  3. Step 3: Cross multiply
    8,623.28x = 12,909.24 × 5,325.68
  4. Step 4: Simplify right side
    8,623.28x = 68,750,481.28
  5. Step 5: Solve for x
    x = 68,750,481.28/8,623.28
  6. Step 6: Final answer
    x = 7,972.66

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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.