Home / 2,739.65-3,781.15-2,154.62

Finding the Fourth Proportional to 2,739.65, 3,781.15 and 2,154.62

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Solution

The fourth proportional to 2,739.65, 3,781.15 and 2,154.62 is: 2,973.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.65 : 3,781.15 = 2,154.62 : x
  2. Step 2: Convert to fraction form
    2,739.65/3,781.15 = 2,154.62/x
  3. Step 3: Cross multiply
    2,739.65x = 3,781.15 × 2,154.62
  4. Step 4: Simplify right side
    2,739.65x = 8,146,945.48
  5. Step 5: Solve for x
    x = 8,146,945.48/2,739.65
  6. Step 6: Final answer
    x = 2,973.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.