Home / 5,400.81-8,100.18-2,279.79

Finding the Fourth Proportional to 5,400.81, 8,100.18 and 2,279.79

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Solution

The fourth proportional to 5,400.81, 8,100.18 and 2,279.79 is: 3,419.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,400.81 : 8,100.18 = 2,279.79 : x
  2. Step 2: Convert to fraction form
    5,400.81/8,100.18 = 2,279.79/x
  3. Step 3: Cross multiply
    5,400.81x = 8,100.18 × 2,279.79
  4. Step 4: Simplify right side
    5,400.81x = 18,466,709.36
  5. Step 5: Solve for x
    x = 18,466,709.36/5,400.81
  6. Step 6: Final answer
    x = 3,419.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.