Home / 7,139.96-9,853.08-3,996.18

Finding the Fourth Proportional to 7,139.96, 9,853.08 and 3,996.18

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Solution

The fourth proportional to 7,139.96, 9,853.08 and 3,996.18 is: 5,514.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.96 : 9,853.08 = 3,996.18 : x
  2. Step 2: Convert to fraction form
    7,139.96/9,853.08 = 3,996.18/x
  3. Step 3: Cross multiply
    7,139.96x = 9,853.08 × 3,996.18
  4. Step 4: Simplify right side
    7,139.96x = 39,374,681.23
  5. Step 5: Solve for x
    x = 39,374,681.23/7,139.96
  6. Step 6: Final answer
    x = 5,514.69

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Half scale
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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.