Home / 1,948.08-2,919.40-1,125.20

Finding the Fourth Proportional to 1,948.08, 2,919.40 and 1,125.20

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Solution

The fourth proportional to 1,948.08, 2,919.40 and 1,125.20 is: 1,686.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.08 : 2,919.40 = 1,125.20 : x
  2. Step 2: Convert to fraction form
    1,948.08/2,919.40 = 1,125.20/x
  3. Step 3: Cross multiply
    1,948.08x = 2,919.40 × 1,125.20
  4. Step 4: Simplify right side
    1,948.08x = 3,284,908.88
  5. Step 5: Solve for x
    x = 3,284,908.88/1,948.08
  6. Step 6: Final answer
    x = 1,686.23

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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.