Home / 1,917.20-2,871.48-1,146.08

Finding the Fourth Proportional to 1,917.20, 2,871.48 and 1,146.08

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Solution

The fourth proportional to 1,917.20, 2,871.48 and 1,146.08 is: 1,716.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.20 : 2,871.48 = 1,146.08 : x
  2. Step 2: Convert to fraction form
    1,917.20/2,871.48 = 1,146.08/x
  3. Step 3: Cross multiply
    1,917.20x = 2,871.48 × 1,146.08
  4. Step 4: Simplify right side
    1,917.20x = 3,290,945.80
  5. Step 5: Solve for x
    x = 3,290,945.80/1,917.20
  6. Step 6: Final answer
    x = 1,716.54

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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.