Home / 1,945.04-2,919.32-1,021.20

Finding the Fourth Proportional to 1,945.04, 2,919.32 and 1,021.20

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Solution

The fourth proportional to 1,945.04, 2,919.32 and 1,021.20 is: 1,532.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.04 : 2,919.32 = 1,021.20 : x
  2. Step 2: Convert to fraction form
    1,945.04/2,919.32 = 1,021.20/x
  3. Step 3: Cross multiply
    1,945.04x = 2,919.32 × 1,021.20
  4. Step 4: Simplify right side
    1,945.04x = 2,981,209.58
  5. Step 5: Solve for x
    x = 2,981,209.58/1,945.04
  6. Step 6: Final answer
    x = 1,532.72

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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.