Home / 1,402.14-2,103.24-671.79

Finding the Fourth Proportional to 1,402.14, 2,103.24 and 671.79

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Solution

The fourth proportional to 1,402.14, 2,103.24 and 671.79 is: 1,007.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402.14 : 2,103.24 = 671.79 : x
  2. Step 2: Convert to fraction form
    1,402.14/2,103.24 = 671.79/x
  3. Step 3: Cross multiply
    1,402.14x = 2,103.24 × 671.79
  4. Step 4: Simplify right side
    1,402.14x = 1,412,935.60
  5. Step 5: Solve for x
    x = 1,412,935.60/1,402.14
  6. Step 6: Final answer
    x = 1,007.70

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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.