Home / 1,578.24-2,176.80-1,080.96

Finding the Fourth Proportional to 1,578.24, 2,176.80 and 1,080.96

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Solution

The fourth proportional to 1,578.24, 2,176.80 and 1,080.96 is: 1,490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.24 : 2,176.80 = 1,080.96 : x
  2. Step 2: Convert to fraction form
    1,578.24/2,176.80 = 1,080.96/x
  3. Step 3: Cross multiply
    1,578.24x = 2,176.80 × 1,080.96
  4. Step 4: Simplify right side
    1,578.24x = 2,353,033.73
  5. Step 5: Solve for x
    x = 2,353,033.73/1,578.24
  6. Step 6: Final answer
    x = 1,490.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.