Home / 7,678.36-11,517.76-2,998.18

Finding the Fourth Proportional to 7,678.36, 11,517.76 and 2,998.18

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Solution

The fourth proportional to 7,678.36, 11,517.76 and 2,998.18 is: 4,497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.36 : 11,517.76 = 2,998.18 : x
  2. Step 2: Convert to fraction form
    7,678.36/11,517.76 = 2,998.18/x
  3. Step 3: Cross multiply
    7,678.36x = 11,517.76 × 2,998.18
  4. Step 4: Simplify right side
    7,678.36x = 34,532,335.82
  5. Step 5: Solve for x
    x = 34,532,335.82/7,678.36
  6. Step 6: Final answer
    x = 4,497.36

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.