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Finding the Fourth Proportional to 3,415.68, 5,114.48 and 2,753.92

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Solution

The fourth proportional to 3,415.68, 5,114.48 and 2,753.92 is: 4,123.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.68 : 5,114.48 = 2,753.92 : x
  2. Step 2: Convert to fraction form
    3,415.68/5,114.48 = 2,753.92/x
  3. Step 3: Cross multiply
    3,415.68x = 5,114.48 × 2,753.92
  4. Step 4: Simplify right side
    3,415.68x = 14,084,868.76
  5. Step 5: Solve for x
    x = 14,084,868.76/3,415.68
  6. Step 6: Final answer
    x = 4,123.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.