Home / 1,941.75-2,913.21-1,120.61

Finding the Fourth Proportional to 1,941.75, 2,913.21 and 1,120.61

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Solution

The fourth proportional to 1,941.75, 2,913.21 and 1,120.61 is: 1,681.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.75 : 2,913.21 = 1,120.61 : x
  2. Step 2: Convert to fraction form
    1,941.75/2,913.21 = 1,120.61/x
  3. Step 3: Cross multiply
    1,941.75x = 2,913.21 × 1,120.61
  4. Step 4: Simplify right side
    1,941.75x = 3,264,579.54
  5. Step 5: Solve for x
    x = 3,264,579.54/1,941.75
  6. Step 6: Final answer
    x = 1,681.26

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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.