Home / 8,218.55-11,330.54-5,381.02

Finding the Fourth Proportional to 8,218.55, 11,330.54 and 5,381.02

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Solution

The fourth proportional to 8,218.55, 11,330.54 and 5,381.02 is: 7,418.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.55 : 11,330.54 = 5,381.02 : x
  2. Step 2: Convert to fraction form
    8,218.55/11,330.54 = 5,381.02/x
  3. Step 3: Cross multiply
    8,218.55x = 11,330.54 × 5,381.02
  4. Step 4: Simplify right side
    8,218.55x = 60,969,862.35
  5. Step 5: Solve for x
    x = 60,969,862.35/8,218.55
  6. Step 6: Final answer
    x = 7,418.57

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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.