Home / 2,726.28-4,090.11-778.49

Finding the Fourth Proportional to 2,726.28, 4,090.11 and 778.49

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Solution

The fourth proportional to 2,726.28, 4,090.11 and 778.49 is: 1,167.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.28 : 4,090.11 = 778.49 : x
  2. Step 2: Convert to fraction form
    2,726.28/4,090.11 = 778.49/x
  3. Step 3: Cross multiply
    2,726.28x = 4,090.11 × 778.49
  4. Step 4: Simplify right side
    2,726.28x = 3,184,089.28
  5. Step 5: Solve for x
    x = 3,184,089.28/2,726.28
  6. Step 6: Final answer
    x = 1,167.92

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1.5x scale

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.