Home / 8,320.20-12,475.08-3,384.12

Finding the Fourth Proportional to 8,320.20, 12,475.08 and 3,384.12

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Solution

The fourth proportional to 8,320.20, 12,475.08 and 3,384.12 is: 5,074.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.20 : 12,475.08 = 3,384.12 : x
  2. Step 2: Convert to fraction form
    8,320.20/12,475.08 = 3,384.12/x
  3. Step 3: Cross multiply
    8,320.20x = 12,475.08 × 3,384.12
  4. Step 4: Simplify right side
    8,320.20x = 42,217,167.73
  5. Step 5: Solve for x
    x = 42,217,167.73/8,320.20
  6. Step 6: Final answer
    x = 5,074.06

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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.