Home / 1,686.24-2,331.36-1,294.56

Finding the Fourth Proportional to 1,686.24, 2,331.36 and 1,294.56

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Solution

The fourth proportional to 1,686.24, 2,331.36 and 1,294.56 is: 1,789.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.24 : 2,331.36 = 1,294.56 : x
  2. Step 2: Convert to fraction form
    1,686.24/2,331.36 = 1,294.56/x
  3. Step 3: Cross multiply
    1,686.24x = 2,331.36 × 1,294.56
  4. Step 4: Simplify right side
    1,686.24x = 3,018,085.40
  5. Step 5: Solve for x
    x = 3,018,085.40/1,686.24
  6. Step 6: Final answer
    x = 1,789.83

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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.