Home / 2,919.31-4,031.30-1,873.19

Finding the Fourth Proportional to 2,919.31, 4,031.30 and 1,873.19

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Solution

The fourth proportional to 2,919.31, 4,031.30 and 1,873.19 is: 2,586.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.31 : 4,031.30 = 1,873.19 : x
  2. Step 2: Convert to fraction form
    2,919.31/4,031.30 = 1,873.19/x
  3. Step 3: Cross multiply
    2,919.31x = 4,031.30 × 1,873.19
  4. Step 4: Simplify right side
    2,919.31x = 7,551,405.61
  5. Step 5: Solve for x
    x = 7,551,405.61/2,919.31
  6. Step 6: Final answer
    x = 2,586.71

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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.