Home / 1,574.15-2,359.20-1,140.80

Finding the Fourth Proportional to 1,574.15, 2,359.20 and 1,140.80

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Solution

The fourth proportional to 1,574.15, 2,359.20 and 1,140.80 is: 1,709.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.15 : 2,359.20 = 1,140.80 : x
  2. Step 2: Convert to fraction form
    1,574.15/2,359.20 = 1,140.80/x
  3. Step 3: Cross multiply
    1,574.15x = 2,359.20 × 1,140.80
  4. Step 4: Simplify right side
    1,574.15x = 2,691,375.36
  5. Step 5: Solve for x
    x = 2,691,375.36/1,574.15
  6. Step 6: Final answer
    x = 1,709.73

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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.