Home / 2,157.30-2,977.65-1,273.41

Finding the Fourth Proportional to 2,157.30, 2,977.65 and 1,273.41

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Solution

The fourth proportional to 2,157.30, 2,977.65 and 1,273.41 is: 1,757.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.30 : 2,977.65 = 1,273.41 : x
  2. Step 2: Convert to fraction form
    2,157.30/2,977.65 = 1,273.41/x
  3. Step 3: Cross multiply
    2,157.30x = 2,977.65 × 1,273.41
  4. Step 4: Simplify right side
    2,157.30x = 3,791,769.29
  5. Step 5: Solve for x
    x = 3,791,769.29/2,157.30
  6. Step 6: Final answer
    x = 1,757.65

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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.