Home / 7,040.31-9,715.48-3,853.52

Finding the Fourth Proportional to 7,040.31, 9,715.48 and 3,853.52

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Solution

The fourth proportional to 7,040.31, 9,715.48 and 3,853.52 is: 5,317.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.31 : 9,715.48 = 3,853.52 : x
  2. Step 2: Convert to fraction form
    7,040.31/9,715.48 = 3,853.52/x
  3. Step 3: Cross multiply
    7,040.31x = 9,715.48 × 3,853.52
  4. Step 4: Simplify right side
    7,040.31x = 37,438,829.36
  5. Step 5: Solve for x
    x = 37,438,829.36/7,040.31
  6. Step 6: Final answer
    x = 5,317.78

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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.