Home / 3,781.89-5,214.80-2,587.08

Finding the Fourth Proportional to 3,781.89, 5,214.80 and 2,587.08

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Solution

The fourth proportional to 3,781.89, 5,214.80 and 2,587.08 is: 3,567.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.89 : 5,214.80 = 2,587.08 : x
  2. Step 2: Convert to fraction form
    3,781.89/5,214.80 = 2,587.08/x
  3. Step 3: Cross multiply
    3,781.89x = 5,214.80 × 2,587.08
  4. Step 4: Simplify right side
    3,781.89x = 13,491,091.85
  5. Step 5: Solve for x
    x = 13,491,091.85/3,781.89
  6. Step 6: Final answer
    x = 3,567.29

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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.