Home / 1,540.35-2,124.94-1,120.05

Finding the Fourth Proportional to 1,540.35, 2,124.94 and 1,120.05

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Solution

The fourth proportional to 1,540.35, 2,124.94 and 1,120.05 is: 1,545.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.35 : 2,124.94 = 1,120.05 : x
  2. Step 2: Convert to fraction form
    1,540.35/2,124.94 = 1,120.05/x
  3. Step 3: Cross multiply
    1,540.35x = 2,124.94 × 1,120.05
  4. Step 4: Simplify right side
    1,540.35x = 2,380,039.05
  5. Step 5: Solve for x
    x = 2,380,039.05/1,540.35
  6. Step 6: Final answer
    x = 1,545.13

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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.