Home / 1,402.18-2,103.73-671.81

Finding the Fourth Proportional to 1,402.18, 2,103.73 and 671.81

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Solution

The fourth proportional to 1,402.18, 2,103.73 and 671.81 is: 1,007.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402.18 : 2,103.73 = 671.81 : x
  2. Step 2: Convert to fraction form
    1,402.18/2,103.73 = 671.81/x
  3. Step 3: Cross multiply
    1,402.18x = 2,103.73 × 671.81
  4. Step 4: Simplify right side
    1,402.18x = 1,413,306.85
  5. Step 5: Solve for x
    x = 1,413,306.85/1,402.18
  6. Step 6: Final answer
    x = 1,007.94

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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.