Home / 2,720.01-4,082.07-1,991.46

Finding the Fourth Proportional to 2,720.01, 4,082.07 and 1,991.46

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Solution

The fourth proportional to 2,720.01, 4,082.07 and 1,991.46 is: 2,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.01 : 4,082.07 = 1,991.46 : x
  2. Step 2: Convert to fraction form
    2,720.01/4,082.07 = 1,991.46/x
  3. Step 3: Cross multiply
    2,720.01x = 4,082.07 × 1,991.46
  4. Step 4: Simplify right side
    2,720.01x = 8,129,279.12
  5. Step 5: Solve for x
    x = 8,129,279.12/2,720.01
  6. Step 6: Final answer
    x = 2,988.69

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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.