Home / 7,142.40-10,694.16-3,672.36

Finding the Fourth Proportional to 7,142.40, 10,694.16 and 3,672.36

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Solution

The fourth proportional to 7,142.40, 10,694.16 and 3,672.36 is: 5,498.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.40 : 10,694.16 = 3,672.36 : x
  2. Step 2: Convert to fraction form
    7,142.40/10,694.16 = 3,672.36/x
  3. Step 3: Cross multiply
    7,142.40x = 10,694.16 × 3,672.36
  4. Step 4: Simplify right side
    7,142.40x = 39,272,805.42
  5. Step 5: Solve for x
    x = 39,272,805.42/7,142.40
  6. Step 6: Final answer
    x = 5,498.54

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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.