Home / 1,403.13-2,101.50-854.11

Finding the Fourth Proportional to 1,403.13, 2,101.50 and 854.11

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Solution

The fourth proportional to 1,403.13, 2,101.50 and 854.11 is: 1,279.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.13 : 2,101.50 = 854.11 : x
  2. Step 2: Convert to fraction form
    1,403.13/2,101.50 = 854.11/x
  3. Step 3: Cross multiply
    1,403.13x = 2,101.50 × 854.11
  4. Step 4: Simplify right side
    1,403.13x = 1,794,901.66
  5. Step 5: Solve for x
    x = 1,794,901.66/1,403.13
  6. Step 6: Final answer
    x = 1,279.21

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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.