Home / 1,726.16-2,381.92-1,137.28

Finding the Fourth Proportional to 1,726.16, 2,381.92 and 1,137.28

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Solution

The fourth proportional to 1,726.16, 2,381.92 and 1,137.28 is: 1,569.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.16 : 2,381.92 = 1,137.28 : x
  2. Step 2: Convert to fraction form
    1,726.16/2,381.92 = 1,137.28/x
  3. Step 3: Cross multiply
    1,726.16x = 2,381.92 × 1,137.28
  4. Step 4: Simplify right side
    1,726.16x = 2,708,909.98
  5. Step 5: Solve for x
    x = 2,708,909.98/1,726.16
  6. Step 6: Final answer
    x = 1,569.33

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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.