Home / 2,758.68-4,140.08-1,720.20

Finding the Fourth Proportional to 2,758.68, 4,140.08 and 1,720.20

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Solution

The fourth proportional to 2,758.68, 4,140.08 and 1,720.20 is: 2,581.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.68 : 4,140.08 = 1,720.20 : x
  2. Step 2: Convert to fraction form
    2,758.68/4,140.08 = 1,720.20/x
  3. Step 3: Cross multiply
    2,758.68x = 4,140.08 × 1,720.20
  4. Step 4: Simplify right side
    2,758.68x = 7,121,765.62
  5. Step 5: Solve for x
    x = 7,121,765.62/2,758.68
  6. Step 6: Final answer
    x = 2,581.58

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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.