Home / 8,130.75-11,220.45-4,404.75

Finding the Fourth Proportional to 8,130.75, 11,220.45 and 4,404.75

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Solution

The fourth proportional to 8,130.75, 11,220.45 and 4,404.75 is: 6,078.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.75 : 11,220.45 = 4,404.75 : x
  2. Step 2: Convert to fraction form
    8,130.75/11,220.45 = 4,404.75/x
  3. Step 3: Cross multiply
    8,130.75x = 11,220.45 × 4,404.75
  4. Step 4: Simplify right side
    8,130.75x = 49,423,277.14
  5. Step 5: Solve for x
    x = 49,423,277.14/8,130.75
  6. Step 6: Final answer
    x = 6,078.56

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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.