Home / 3,854.25-5,781.51-1,257.12

Finding the Fourth Proportional to 3,854.25, 5,781.51 and 1,257.12

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Solution

The fourth proportional to 3,854.25, 5,781.51 and 1,257.12 is: 1,885.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,854.25 : 5,781.51 = 1,257.12 : x
  2. Step 2: Convert to fraction form
    3,854.25/5,781.51 = 1,257.12/x
  3. Step 3: Cross multiply
    3,854.25x = 5,781.51 × 1,257.12
  4. Step 4: Simplify right side
    3,854.25x = 7,268,051.85
  5. Step 5: Solve for x
    x = 7,268,051.85/3,854.25
  6. Step 6: Final answer
    x = 1,885.72

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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.