Home / 3,853.31-5,778.54-1,387.46

Finding the Fourth Proportional to 3,853.31, 5,778.54 and 1,387.46

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Solution

The fourth proportional to 3,853.31, 5,778.54 and 1,387.46 is: 2,080.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.31 : 5,778.54 = 1,387.46 : x
  2. Step 2: Convert to fraction form
    3,853.31/5,778.54 = 1,387.46/x
  3. Step 3: Cross multiply
    3,853.31x = 5,778.54 × 1,387.46
  4. Step 4: Simplify right side
    3,853.31x = 8,017,507.55
  5. Step 5: Solve for x
    x = 8,017,507.55/3,853.31
  6. Step 6: Final answer
    x = 2,080.68

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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.