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Finding the Fourth Proportional to 2,726.92, 4,090.11 and 877.69

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Solution

The fourth proportional to 2,726.92, 4,090.11 and 877.69 is: 1,316.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.92 : 4,090.11 = 877.69 : x
  2. Step 2: Convert to fraction form
    2,726.92/4,090.11 = 877.69/x
  3. Step 3: Cross multiply
    2,726.92x = 4,090.11 × 877.69
  4. Step 4: Simplify right side
    2,726.92x = 3,589,848.65
  5. Step 5: Solve for x
    x = 3,589,848.65/2,726.92
  6. Step 6: Final answer
    x = 1,316.45

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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.