Home / 2,726.29-4,090.11-778.48

Finding the Fourth Proportional to 2,726.29, 4,090.11 and 778.48

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Solution

The fourth proportional to 2,726.29, 4,090.11 and 778.48 is: 1,167.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.29 : 4,090.11 = 778.48 : x
  2. Step 2: Convert to fraction form
    2,726.29/4,090.11 = 778.48/x
  3. Step 3: Cross multiply
    2,726.29x = 4,090.11 × 778.48
  4. Step 4: Simplify right side
    2,726.29x = 3,184,068.83
  5. Step 5: Solve for x
    x = 3,184,068.83/2,726.29
  6. Step 6: Final answer
    x = 1,167.91

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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.