Home / 3,751.68-5,177.73-2,158.40

Finding the Fourth Proportional to 3,751.68, 5,177.73 and 2,158.40

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Solution

The fourth proportional to 3,751.68, 5,177.73 and 2,158.40 is: 2,978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,751.68 : 5,177.73 = 2,158.40 : x
  2. Step 2: Convert to fraction form
    3,751.68/5,177.73 = 2,158.40/x
  3. Step 3: Cross multiply
    3,751.68x = 5,177.73 × 2,158.40
  4. Step 4: Simplify right side
    3,751.68x = 11,175,621.33
  5. Step 5: Solve for x
    x = 11,175,621.33/3,751.68
  6. Step 6: Final answer
    x = 2,978.83

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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.