Home / 8,158.19-12,219.68-5,511.12

Finding the Fourth Proportional to 8,158.19, 12,219.68 and 5,511.12

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Solution

The fourth proportional to 8,158.19, 12,219.68 and 5,511.12 is: 8,254.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,158.19 : 12,219.68 = 5,511.12 : x
  2. Step 2: Convert to fraction form
    8,158.19/12,219.68 = 5,511.12/x
  3. Step 3: Cross multiply
    8,158.19x = 12,219.68 × 5,511.12
  4. Step 4: Simplify right side
    8,158.19x = 67,344,095.29
  5. Step 5: Solve for x
    x = 67,344,095.29/8,158.19
  6. Step 6: Final answer
    x = 8,254.79

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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.