Home / 8,130.39-11,212.91-5,296.70

Finding the Fourth Proportional to 8,130.39, 11,212.91 and 5,296.70

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Solution

The fourth proportional to 8,130.39, 11,212.91 and 5,296.70 is: 7,304.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.39 : 11,212.91 = 5,296.70 : x
  2. Step 2: Convert to fraction form
    8,130.39/11,212.91 = 5,296.70/x
  3. Step 3: Cross multiply
    8,130.39x = 11,212.91 × 5,296.70
  4. Step 4: Simplify right side
    8,130.39x = 59,391,337.85
  5. Step 5: Solve for x
    x = 59,391,337.85/8,130.39
  6. Step 6: Final answer
    x = 7,304.86

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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.