Home / 5,480.34-8,218.79-1,781.72

Finding the Fourth Proportional to 5,480.34, 8,218.79 and 1,781.72

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Solution

The fourth proportional to 5,480.34, 8,218.79 and 1,781.72 is: 2,672.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480.34 : 8,218.79 = 1,781.72 : x
  2. Step 2: Convert to fraction form
    5,480.34/8,218.79 = 1,781.72/x
  3. Step 3: Cross multiply
    5,480.34x = 8,218.79 × 1,781.72
  4. Step 4: Simplify right side
    5,480.34x = 14,643,532.52
  5. Step 5: Solve for x
    x = 14,643,532.52/5,480.34
  6. Step 6: Final answer
    x = 2,672.01

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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.