Home / 1,574.17-2,171.27-1,013.78

Finding the Fourth Proportional to 1,574.17, 2,171.27 and 1,013.78

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Solution

The fourth proportional to 1,574.17, 2,171.27 and 1,013.78 is: 1,398.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.17 : 2,171.27 = 1,013.78 : x
  2. Step 2: Convert to fraction form
    1,574.17/2,171.27 = 1,013.78/x
  3. Step 3: Cross multiply
    1,574.17x = 2,171.27 × 1,013.78
  4. Step 4: Simplify right side
    1,574.17x = 2,201,198.06
  5. Step 5: Solve for x
    x = 2,201,198.06/1,574.17
  6. Step 6: Final answer
    x = 1,398.33

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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.