Home / 2,720.55-3,753.24-2,158.80

Finding the Fourth Proportional to 2,720.55, 3,753.24 and 2,158.80

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Solution

The fourth proportional to 2,720.55, 3,753.24 and 2,158.80 is: 2,978.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.55 : 3,753.24 = 2,158.80 : x
  2. Step 2: Convert to fraction form
    2,720.55/3,753.24 = 2,158.80/x
  3. Step 3: Cross multiply
    2,720.55x = 3,753.24 × 2,158.80
  4. Step 4: Simplify right side
    2,720.55x = 8,102,494.51
  5. Step 5: Solve for x
    x = 8,102,494.51/2,720.55
  6. Step 6: Final answer
    x = 2,978.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.