Home / 8,130.79-11,218.97-5,144.53

Finding the Fourth Proportional to 8,130.79, 11,218.97 and 5,144.53

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Solution

The fourth proportional to 8,130.79, 11,218.97 and 5,144.53 is: 7,098.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.79 : 11,218.97 = 5,144.53 : x
  2. Step 2: Convert to fraction form
    8,130.79/11,218.97 = 5,144.53/x
  3. Step 3: Cross multiply
    8,130.79x = 11,218.97 × 5,144.53
  4. Step 4: Simplify right side
    8,130.79x = 57,716,327.73
  5. Step 5: Solve for x
    x = 57,716,327.73/8,130.79
  6. Step 6: Final answer
    x = 7,098.49

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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.