Home / 7,140.14-9,853.43-3,996.13

Finding the Fourth Proportional to 7,140.14, 9,853.43 and 3,996.13

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Solution

The fourth proportional to 7,140.14, 9,853.43 and 3,996.13 is: 5,514.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.14 : 9,853.43 = 3,996.13 : x
  2. Step 2: Convert to fraction form
    7,140.14/9,853.43 = 3,996.13/x
  3. Step 3: Cross multiply
    7,140.14x = 9,853.43 × 3,996.13
  4. Step 4: Simplify right side
    7,140.14x = 39,375,587.23
  5. Step 5: Solve for x
    x = 39,375,587.23/7,140.14
  6. Step 6: Final answer
    x = 5,514.68

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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.