Home / 1,948.06-2,919.30-1,217.20

Finding the Fourth Proportional to 1,948.06, 2,919.30 and 1,217.20

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Solution

The fourth proportional to 1,948.06, 2,919.30 and 1,217.20 is: 1,824.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.06 : 2,919.30 = 1,217.20 : x
  2. Step 2: Convert to fraction form
    1,948.06/2,919.30 = 1,217.20/x
  3. Step 3: Cross multiply
    1,948.06x = 2,919.30 × 1,217.20
  4. Step 4: Simplify right side
    1,948.06x = 3,553,371.96
  5. Step 5: Solve for x
    x = 3,553,371.96/1,948.06
  6. Step 6: Final answer
    x = 1,824.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.