Home / 3,902.97-5,387.70-2,645.74

Finding the Fourth Proportional to 3,902.97, 5,387.70 and 2,645.74

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Solution

The fourth proportional to 3,902.97, 5,387.70 and 2,645.74 is: 3,652.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.97 : 5,387.70 = 2,645.74 : x
  2. Step 2: Convert to fraction form
    3,902.97/5,387.70 = 2,645.74/x
  3. Step 3: Cross multiply
    3,902.97x = 5,387.70 × 2,645.74
  4. Step 4: Simplify right side
    3,902.97x = 14,254,462.88
  5. Step 5: Solve for x
    x = 14,254,462.88/3,902.97
  6. Step 6: Final answer
    x = 3,652.21

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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.