Home / 8,511.20-12,752.40-4,119.20

Finding the Fourth Proportional to 8,511.20, 12,752.40 and 4,119.20

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Solution

The fourth proportional to 8,511.20, 12,752.40 and 4,119.20 is: 6,171.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.20 : 12,752.40 = 4,119.20 : x
  2. Step 2: Convert to fraction form
    8,511.20/12,752.40 = 4,119.20/x
  3. Step 3: Cross multiply
    8,511.20x = 12,752.40 × 4,119.20
  4. Step 4: Simplify right side
    8,511.20x = 52,529,686.08
  5. Step 5: Solve for x
    x = 52,529,686.08/8,511.20
  6. Step 6: Final answer
    x = 6,171.83

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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.