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Finding the Fourth Proportional to 5,135.32, 7,040.50 and 5,041.90

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Solution

The fourth proportional to 5,135.32, 7,040.50 and 5,041.90 is: 6,912.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.32 : 7,040.50 = 5,041.90 : x
  2. Step 2: Convert to fraction form
    5,135.32/7,040.50 = 5,041.90/x
  3. Step 3: Cross multiply
    5,135.32x = 7,040.50 × 5,041.90
  4. Step 4: Simplify right side
    5,135.32x = 35,497,496.95
  5. Step 5: Solve for x
    x = 35,497,496.95/5,135.32
  6. Step 6: Final answer
    x = 6,912.42

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.