Home / 8,123.40-11,213.46-5,329.80

Finding the Fourth Proportional to 8,123.40, 11,213.46 and 5,329.80

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Solution

The fourth proportional to 8,123.40, 11,213.46 and 5,329.80 is: 7,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.40 : 11,213.46 = 5,329.80 : x
  2. Step 2: Convert to fraction form
    8,123.40/11,213.46 = 5,329.80/x
  3. Step 3: Cross multiply
    8,123.40x = 11,213.46 × 5,329.80
  4. Step 4: Simplify right side
    8,123.40x = 59,765,499.11
  5. Step 5: Solve for x
    x = 59,765,499.11/8,123.40
  6. Step 6: Final answer
    x = 7,357.20

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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.