Home / 7,918.38-10,926.25-6,728.20

Finding the Fourth Proportional to 7,918.38, 10,926.25 and 6,728.20

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Solution

The fourth proportional to 7,918.38, 10,926.25 and 6,728.20 is: 9,283.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.38 : 10,926.25 = 6,728.20 : x
  2. Step 2: Convert to fraction form
    7,918.38/10,926.25 = 6,728.20/x
  3. Step 3: Cross multiply
    7,918.38x = 10,926.25 × 6,728.20
  4. Step 4: Simplify right side
    7,918.38x = 73,513,951.11
  5. Step 5: Solve for x
    x = 73,513,951.11/7,918.38
  6. Step 6: Final answer
    x = 9,283.96

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Half 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.