Home / 1,729.81-2,387.18-943.86

Finding the Fourth Proportional to 1,729.81, 2,387.18 and 943.86

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Solution

The fourth proportional to 1,729.81, 2,387.18 and 943.86 is: 1,302.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.81 : 2,387.18 = 943.86 : x
  2. Step 2: Convert to fraction form
    1,729.81/2,387.18 = 943.86/x
  3. Step 3: Cross multiply
    1,729.81x = 2,387.18 × 943.86
  4. Step 4: Simplify right side
    1,729.81x = 2,253,160.77
  5. Step 5: Solve for x
    x = 2,253,160.77/1,729.81
  6. Step 6: Final answer
    x = 1,302.55

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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.