Home / 8,938.68-12,327.28-5,581.80

Finding the Fourth Proportional to 8,938.68, 12,327.28 and 5,581.80

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Solution

The fourth proportional to 8,938.68, 12,327.28 and 5,581.80 is: 7,697.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.68 : 12,327.28 = 5,581.80 : x
  2. Step 2: Convert to fraction form
    8,938.68/12,327.28 = 5,581.80/x
  3. Step 3: Cross multiply
    8,938.68x = 12,327.28 × 5,581.80
  4. Step 4: Simplify right side
    8,938.68x = 68,808,411.50
  5. Step 5: Solve for x
    x = 68,808,411.50/8,938.68
  6. Step 6: Final answer
    x = 7,697.83

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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.