Home / 1,726.30-2,588.87-686.56

Finding the Fourth Proportional to 1,726.30, 2,588.87 and 686.56

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Solution

The fourth proportional to 1,726.30, 2,588.87 and 686.56 is: 1,029.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.30 : 2,588.87 = 686.56 : x
  2. Step 2: Convert to fraction form
    1,726.30/2,588.87 = 686.56/x
  3. Step 3: Cross multiply
    1,726.30x = 2,588.87 × 686.56
  4. Step 4: Simplify right side
    1,726.30x = 1,777,403.36
  5. Step 5: Solve for x
    x = 1,777,403.36/1,726.30
  6. Step 6: Final answer
    x = 1,029.61

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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.