Home / 5,813.30-8,720.56-1,917.72

Finding the Fourth Proportional to 5,813.30, 8,720.56 and 1,917.72

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Solution

The fourth proportional to 5,813.30, 8,720.56 and 1,917.72 is: 2,876.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,813.30 : 8,720.56 = 1,917.72 : x
  2. Step 2: Convert to fraction form
    5,813.30/8,720.56 = 1,917.72/x
  3. Step 3: Cross multiply
    5,813.30x = 8,720.56 × 1,917.72
  4. Step 4: Simplify right side
    5,813.30x = 16,723,592.32
  5. Step 5: Solve for x
    x = 16,723,592.32/5,813.30
  6. Step 6: Final answer
    x = 2,876.78

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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.