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Finding the Fourth Proportional to 5,071.21, 7,007.21 and 3,902.38

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Solution

The fourth proportional to 5,071.21, 7,007.21 and 3,902.38 is: 5,392.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,071.21 : 7,007.21 = 3,902.38 : x
  2. Step 2: Convert to fraction form
    5,071.21/7,007.21 = 3,902.38/x
  3. Step 3: Cross multiply
    5,071.21x = 7,007.21 × 3,902.38
  4. Step 4: Simplify right side
    5,071.21x = 27,344,773.76
  5. Step 5: Solve for x
    x = 27,344,773.76/5,071.21
  6. Step 6: Final answer
    x = 5,392.16

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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.