Home / 7,299-10,945.92-2,915.28

Finding the Fourth Proportional to 7,299, 10,945.92 and 2,915.28

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Solution

The fourth proportional to 7,299, 10,945.92 and 2,915.28 is: 4,371.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,299 : 10,945.92 = 2,915.28 : x
  2. Step 2: Convert to fraction form
    7,299/10,945.92 = 2,915.28/x
  3. Step 3: Cross multiply
    7,299x = 10,945.92 × 2,915.28
  4. Step 4: Simplify right side
    7,299x = 31,910,421.66
  5. Step 5: Solve for x
    x = 31,910,421.66/7,299
  6. Step 6: Final answer
    x = 4,371.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.