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Finding the Fourth Proportional to 7,102.36, 9,801.42 and 3,958.74

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Solution

The fourth proportional to 7,102.36, 9,801.42 and 3,958.74 is: 5,463.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,102.36 : 9,801.42 = 3,958.74 : x
  2. Step 2: Convert to fraction form
    7,102.36/9,801.42 = 3,958.74/x
  3. Step 3: Cross multiply
    7,102.36x = 9,801.42 × 3,958.74
  4. Step 4: Simplify right side
    7,102.36x = 38,801,273.41
  5. Step 5: Solve for x
    x = 38,801,273.41/7,102.36
  6. Step 6: Final answer
    x = 5,463.15

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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.