Home / 7,175.18-9,901.76-4,031.38

Finding the Fourth Proportional to 7,175.18, 9,901.76 and 4,031.38

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Solution

The fourth proportional to 7,175.18, 9,901.76 and 4,031.38 is: 5,563.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.18 : 9,901.76 = 4,031.38 : x
  2. Step 2: Convert to fraction form
    7,175.18/9,901.76 = 4,031.38/x
  3. Step 3: Cross multiply
    7,175.18x = 9,901.76 × 4,031.38
  4. Step 4: Simplify right side
    7,175.18x = 39,917,757.23
  5. Step 5: Solve for x
    x = 39,917,757.23/7,175.18
  6. Step 6: Final answer
    x = 5,563.31

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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.