Home / 1,148.80-1,723.62-1,109.92

Finding the Fourth Proportional to 1,148.80, 1,723.62 and 1,109.92

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Solution

The fourth proportional to 1,148.80, 1,723.62 and 1,109.92 is: 1,665.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.80 : 1,723.62 = 1,109.92 : x
  2. Step 2: Convert to fraction form
    1,148.80/1,723.62 = 1,109.92/x
  3. Step 3: Cross multiply
    1,148.80x = 1,723.62 × 1,109.92
  4. Step 4: Simplify right side
    1,148.80x = 1,913,080.31
  5. Step 5: Solve for x
    x = 1,913,080.31/1,148.80
  6. Step 6: Final answer
    x = 1,665.29

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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.