Home / 3,489.90-5,258.85-2,887.11

Finding the Fourth Proportional to 3,489.90, 5,258.85 and 2,887.11

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Solution

The fourth proportional to 3,489.90, 5,258.85 and 2,887.11 is: 4,350.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.90 : 5,258.85 = 2,887.11 : x
  2. Step 2: Convert to fraction form
    3,489.90/5,258.85 = 2,887.11/x
  3. Step 3: Cross multiply
    3,489.90x = 5,258.85 × 2,887.11
  4. Step 4: Simplify right side
    3,489.90x = 15,182,878.42
  5. Step 5: Solve for x
    x = 15,182,878.42/3,489.90
  6. Step 6: Final answer
    x = 4,350.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.