Home / 8,389.20-11,593.08-6,289.68

Finding the Fourth Proportional to 8,389.20, 11,593.08 and 6,289.68

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Solution

The fourth proportional to 8,389.20, 11,593.08 and 6,289.68 is: 8,691.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.20 : 11,593.08 = 6,289.68 : x
  2. Step 2: Convert to fraction form
    8,389.20/11,593.08 = 6,289.68/x
  3. Step 3: Cross multiply
    8,389.20x = 11,593.08 × 6,289.68
  4. Step 4: Simplify right side
    8,389.20x = 72,916,763.41
  5. Step 5: Solve for x
    x = 72,916,763.41/8,389.20
  6. Step 6: Final answer
    x = 8,691.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.