Home / 7,182.39-9,911.56-3,995.62

Finding the Fourth Proportional to 7,182.39, 9,911.56 and 3,995.62

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Solution

The fourth proportional to 7,182.39, 9,911.56 and 3,995.62 is: 5,513.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182.39 : 9,911.56 = 3,995.62 : x
  2. Step 2: Convert to fraction form
    7,182.39/9,911.56 = 3,995.62/x
  3. Step 3: Cross multiply
    7,182.39x = 9,911.56 × 3,995.62
  4. Step 4: Simplify right side
    7,182.39x = 39,602,855.84
  5. Step 5: Solve for x
    x = 39,602,855.84/7,182.39
  6. Step 6: Final answer
    x = 5,513.88

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Half scale
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Double scale
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Similar ratio
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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.