Home / 1,726.40-2,590.16-1,239.04

Finding the Fourth Proportional to 1,726.40, 2,590.16 and 1,239.04

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Solution

The fourth proportional to 1,726.40, 2,590.16 and 1,239.04 is: 1,858.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.40 : 2,590.16 = 1,239.04 : x
  2. Step 2: Convert to fraction form
    1,726.40/2,590.16 = 1,239.04/x
  3. Step 3: Cross multiply
    1,726.40x = 2,590.16 × 1,239.04
  4. Step 4: Simplify right side
    1,726.40x = 3,209,311.85
  5. Step 5: Solve for x
    x = 3,209,311.85/1,726.40
  6. Step 6: Final answer
    x = 1,858.96

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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.