Home / 4,101.29-5,664.50-2,987.21

Finding the Fourth Proportional to 4,101.29, 5,664.50 and 2,987.21

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Solution

The fourth proportional to 4,101.29, 5,664.50 and 2,987.21 is: 4,125.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,101.29 : 5,664.50 = 2,987.21 : x
  2. Step 2: Convert to fraction form
    4,101.29/5,664.50 = 2,987.21/x
  3. Step 3: Cross multiply
    4,101.29x = 5,664.50 × 2,987.21
  4. Step 4: Simplify right side
    4,101.29x = 16,921,007.79
  5. Step 5: Solve for x
    x = 16,921,007.79/4,101.29
  6. Step 6: Final answer
    x = 4,125.78

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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.