Home / 2,726.30-4,090.12-778.66

Finding the Fourth Proportional to 2,726.30, 4,090.12 and 778.66

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Solution

The fourth proportional to 2,726.30, 4,090.12 and 778.66 is: 1,168.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.30 : 4,090.12 = 778.66 : x
  2. Step 2: Convert to fraction form
    2,726.30/4,090.12 = 778.66/x
  3. Step 3: Cross multiply
    2,726.30x = 4,090.12 × 778.66
  4. Step 4: Simplify right side
    2,726.30x = 3,184,812.84
  5. Step 5: Solve for x
    x = 3,184,812.84/2,726.30
  6. Step 6: Final answer
    x = 1,168.18

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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.