Home / 1,603.17-2,211.75-1,079.55

Finding the Fourth Proportional to 1,603.17, 2,211.75 and 1,079.55

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Solution

The fourth proportional to 1,603.17, 2,211.75 and 1,079.55 is: 1,489.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.17 : 2,211.75 = 1,079.55 : x
  2. Step 2: Convert to fraction form
    1,603.17/2,211.75 = 1,079.55/x
  3. Step 3: Cross multiply
    1,603.17x = 2,211.75 × 1,079.55
  4. Step 4: Simplify right side
    1,603.17x = 2,387,694.71
  5. Step 5: Solve for x
    x = 2,387,694.71/1,603.17
  6. Step 6: Final answer
    x = 1,489.36

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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.