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Finding the Fourth Proportional to 5,375.97, 7,418.08 and 2,985.76

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Solution

The fourth proportional to 5,375.97, 7,418.08 and 2,985.76 is: 4,119.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,375.97 : 7,418.08 = 2,985.76 : x
  2. Step 2: Convert to fraction form
    5,375.97/7,418.08 = 2,985.76/x
  3. Step 3: Cross multiply
    5,375.97x = 7,418.08 × 2,985.76
  4. Step 4: Simplify right side
    5,375.97x = 22,148,619.55
  5. Step 5: Solve for x
    x = 22,148,619.55/5,375.97
  6. Step 6: Final answer
    x = 4,119.93

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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.