Home / 2,574.28-3,860.50-1,112.64

Finding the Fourth Proportional to 2,574.28, 3,860.50 and 1,112.64

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Solution

The fourth proportional to 2,574.28, 3,860.50 and 1,112.64 is: 1,668.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,574.28 : 3,860.50 = 1,112.64 : x
  2. Step 2: Convert to fraction form
    2,574.28/3,860.50 = 1,112.64/x
  3. Step 3: Cross multiply
    2,574.28x = 3,860.50 × 1,112.64
  4. Step 4: Simplify right side
    2,574.28x = 4,295,346.72
  5. Step 5: Solve for x
    x = 4,295,346.72/2,574.28
  6. Step 6: Final answer
    x = 1,668.56

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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.