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Finding the Fourth Proportional to 3,869.47, 5,353.94 and 3,373.15

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Solution

The fourth proportional to 3,869.47, 5,353.94 and 3,373.15 is: 4,667.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.47 : 5,353.94 = 3,373.15 : x
  2. Step 2: Convert to fraction form
    3,869.47/5,353.94 = 3,373.15/x
  3. Step 3: Cross multiply
    3,869.47x = 5,353.94 × 3,373.15
  4. Step 4: Simplify right side
    3,869.47x = 18,059,642.71
  5. Step 5: Solve for x
    x = 18,059,642.71/3,869.47
  6. Step 6: Final answer
    x = 4,667.21

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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.