Home / 5,815.44-8,720.22-1,918.56

Finding the Fourth Proportional to 5,815.44, 8,720.22 and 1,918.56

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Solution

The fourth proportional to 5,815.44, 8,720.22 and 1,918.56 is: 2,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.44 : 8,720.22 = 1,918.56 : x
  2. Step 2: Convert to fraction form
    5,815.44/8,720.22 = 1,918.56/x
  3. Step 3: Cross multiply
    5,815.44x = 8,720.22 × 1,918.56
  4. Step 4: Simplify right side
    5,815.44x = 16,730,265.28
  5. Step 5: Solve for x
    x = 16,730,265.28/5,815.44
  6. Step 6: Final answer
    x = 2,876.87

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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.