Home / 1,574.73-2,170.87-1,279.49

Finding the Fourth Proportional to 1,574.73, 2,170.87 and 1,279.49

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Solution

The fourth proportional to 1,574.73, 2,170.87 and 1,279.49 is: 1,763.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.73 : 2,170.87 = 1,279.49 : x
  2. Step 2: Convert to fraction form
    1,574.73/2,170.87 = 1,279.49/x
  3. Step 3: Cross multiply
    1,574.73x = 2,170.87 × 1,279.49
  4. Step 4: Simplify right side
    1,574.73x = 2,777,592.40
  5. Step 5: Solve for x
    x = 2,777,592.40/1,574.73
  6. Step 6: Final answer
    x = 1,763.85

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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.