Home / 2,921.30-4,034.14-1,875.20

Finding the Fourth Proportional to 2,921.30, 4,034.14 and 1,875.20

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Solution

The fourth proportional to 2,921.30, 4,034.14 and 1,875.20 is: 2,589.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.30 : 4,034.14 = 1,875.20 : x
  2. Step 2: Convert to fraction form
    2,921.30/4,034.14 = 1,875.20/x
  3. Step 3: Cross multiply
    2,921.30x = 4,034.14 × 1,875.20
  4. Step 4: Simplify right side
    2,921.30x = 7,564,819.33
  5. Step 5: Solve for x
    x = 7,564,819.33/2,921.30
  6. Step 6: Final answer
    x = 2,589.54

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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.