Home / 8,319.48-11,478.12-5,488.26

Finding the Fourth Proportional to 8,319.48, 11,478.12 and 5,488.26

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Solution

The fourth proportional to 8,319.48, 11,478.12 and 5,488.26 is: 7,571.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.48 : 11,478.12 = 5,488.26 : x
  2. Step 2: Convert to fraction form
    8,319.48/11,478.12 = 5,488.26/x
  3. Step 3: Cross multiply
    8,319.48x = 11,478.12 × 5,488.26
  4. Step 4: Simplify right side
    8,319.48x = 62,994,843.25
  5. Step 5: Solve for x
    x = 62,994,843.25/8,319.48
  6. Step 6: Final answer
    x = 7,571.97

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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.