Home / 8,329.60-12,491.04-3,132.64

Finding the Fourth Proportional to 8,329.60, 12,491.04 and 3,132.64

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Solution

The fourth proportional to 8,329.60, 12,491.04 and 3,132.64 is: 4,697.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,329.60 : 12,491.04 = 3,132.64 : x
  2. Step 2: Convert to fraction form
    8,329.60/12,491.04 = 3,132.64/x
  3. Step 3: Cross multiply
    8,329.60x = 12,491.04 × 3,132.64
  4. Step 4: Simplify right side
    8,329.60x = 39,129,931.55
  5. Step 5: Solve for x
    x = 39,129,931.55/8,329.60
  6. Step 6: Final answer
    x = 4,697.70

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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.