Home / 2,157.92-2,977.76-1,273.92

Finding the Fourth Proportional to 2,157.92, 2,977.76 and 1,273.92

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Solution

The fourth proportional to 2,157.92, 2,977.76 and 1,273.92 is: 1,757.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.92 : 2,977.76 = 1,273.92 : x
  2. Step 2: Convert to fraction form
    2,157.92/2,977.76 = 1,273.92/x
  3. Step 3: Cross multiply
    2,157.92x = 2,977.76 × 1,273.92
  4. Step 4: Simplify right side
    2,157.92x = 3,793,428.02
  5. Step 5: Solve for x
    x = 3,793,428.02/2,157.92
  6. Step 6: Final answer
    x = 1,757.91

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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.