Home / 8,174.82-11,279.75-4,987.38

Finding the Fourth Proportional to 8,174.82, 11,279.75 and 4,987.38

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Solution

The fourth proportional to 8,174.82, 11,279.75 and 4,987.38 is: 6,881.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,174.82 : 11,279.75 = 4,987.38 : x
  2. Step 2: Convert to fraction form
    8,174.82/11,279.75 = 4,987.38/x
  3. Step 3: Cross multiply
    8,174.82x = 11,279.75 × 4,987.38
  4. Step 4: Simplify right side
    8,174.82x = 56,256,374.62
  5. Step 5: Solve for x
    x = 56,256,374.62/8,174.82
  6. Step 6: Final answer
    x = 6,881.67

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Half scale
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Double 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.