Home / 5,220.03-7,832.55-2,587.78

Finding the Fourth Proportional to 5,220.03, 7,832.55 and 2,587.78

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Solution

The fourth proportional to 5,220.03, 7,832.55 and 2,587.78 is: 3,882.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.03 : 7,832.55 = 2,587.78 : x
  2. Step 2: Convert to fraction form
    5,220.03/7,832.55 = 2,587.78/x
  3. Step 3: Cross multiply
    5,220.03x = 7,832.55 × 2,587.78
  4. Step 4: Simplify right side
    5,220.03x = 20,268,877.08
  5. Step 5: Solve for x
    x = 20,268,877.08/5,220.03
  6. Step 6: Final answer
    x = 3,882.90

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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.