Home / 5,279.21-7,276.94-4,158.38

Finding the Fourth Proportional to 5,279.21, 7,276.94 and 4,158.38

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Solution

The fourth proportional to 5,279.21, 7,276.94 and 4,158.38 is: 5,731.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.21 : 7,276.94 = 4,158.38 : x
  2. Step 2: Convert to fraction form
    5,279.21/7,276.94 = 4,158.38/x
  3. Step 3: Cross multiply
    5,279.21x = 7,276.94 × 4,158.38
  4. Step 4: Simplify right side
    5,279.21x = 30,260,240.17
  5. Step 5: Solve for x
    x = 30,260,240.17/5,279.21
  6. Step 6: Final answer
    x = 5,731.96

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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.