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Finding the Fourth Proportional to 5,998.76, 8,279.78 and 4,087.74

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Solution

The fourth proportional to 5,998.76, 8,279.78 and 4,087.74 is: 5,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,998.76 : 8,279.78 = 4,087.74 : x
  2. Step 2: Convert to fraction form
    5,998.76/8,279.78 = 4,087.74/x
  3. Step 3: Cross multiply
    5,998.76x = 8,279.78 × 4,087.74
  4. Step 4: Simplify right side
    5,998.76x = 33,845,567.46
  5. Step 5: Solve for x
    x = 33,845,567.46/5,998.76
  6. Step 6: Final answer
    x = 5,642.10

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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.