Home / 5,380.14-7,423.74-2,990.04

Finding the Fourth Proportional to 5,380.14, 7,423.74 and 2,990.04

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Solution

The fourth proportional to 5,380.14, 7,423.74 and 2,990.04 is: 4,125.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.14 : 7,423.74 = 2,990.04 : x
  2. Step 2: Convert to fraction form
    5,380.14/7,423.74 = 2,990.04/x
  3. Step 3: Cross multiply
    5,380.14x = 7,423.74 × 2,990.04
  4. Step 4: Simplify right side
    5,380.14x = 22,197,279.55
  5. Step 5: Solve for x
    x = 22,197,279.55/5,380.14
  6. Step 6: Final answer
    x = 4,125.78

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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.