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Finding the Fourth Proportional to 3,726.73, 5,143.05 and 2,154.73

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Solution

The fourth proportional to 3,726.73, 5,143.05 and 2,154.73 is: 2,973.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,726.73 : 5,143.05 = 2,154.73 : x
  2. Step 2: Convert to fraction form
    3,726.73/5,143.05 = 2,154.73/x
  3. Step 3: Cross multiply
    3,726.73x = 5,143.05 × 2,154.73
  4. Step 4: Simplify right side
    3,726.73x = 11,081,884.13
  5. Step 5: Solve for x
    x = 11,081,884.13/3,726.73
  6. Step 6: Final answer
    x = 2,973.62

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1.5x scale

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.