Home / 5,118.62-7,063.59-3,129.20

Finding the Fourth Proportional to 5,118.62, 7,063.59 and 3,129.20

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Solution

The fourth proportional to 5,118.62, 7,063.59 and 3,129.20 is: 4,318.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.62 : 7,063.59 = 3,129.20 : x
  2. Step 2: Convert to fraction form
    5,118.62/7,063.59 = 3,129.20/x
  3. Step 3: Cross multiply
    5,118.62x = 7,063.59 × 3,129.20
  4. Step 4: Simplify right side
    5,118.62x = 22,103,385.83
  5. Step 5: Solve for x
    x = 22,103,385.83/5,118.62
  6. Step 6: Final answer
    x = 4,318.23

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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.