Home / 5,279.06-7,278.48-3,387.30

Finding the Fourth Proportional to 5,279.06, 7,278.48 and 3,387.30

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Solution

The fourth proportional to 5,279.06, 7,278.48 and 3,387.30 is: 4,670.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.06 : 7,278.48 = 3,387.30 : x
  2. Step 2: Convert to fraction form
    5,279.06/7,278.48 = 3,387.30/x
  3. Step 3: Cross multiply
    5,279.06x = 7,278.48 × 3,387.30
  4. Step 4: Simplify right side
    5,279.06x = 24,654,408.95
  5. Step 5: Solve for x
    x = 24,654,408.95/5,279.06
  6. Step 6: Final answer
    x = 4,670.23

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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.