Home / 5,254.40-7,877.60-2,659.20

Finding the Fourth Proportional to 5,254.40, 7,877.60 and 2,659.20

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Solution

The fourth proportional to 5,254.40, 7,877.60 and 2,659.20 is: 3,986.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,254.40 : 7,877.60 = 2,659.20 : x
  2. Step 2: Convert to fraction form
    5,254.40/7,877.60 = 2,659.20/x
  3. Step 3: Cross multiply
    5,254.40x = 7,877.60 × 2,659.20
  4. Step 4: Simplify right side
    5,254.40x = 20,948,113.92
  5. Step 5: Solve for x
    x = 20,948,113.92/5,254.40
  6. Step 6: Final answer
    x = 3,986.78

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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.