Home / 1,941.86-2,680.02-1,278.92

Finding the Fourth Proportional to 1,941.86, 2,680.02 and 1,278.92

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Solution

The fourth proportional to 1,941.86, 2,680.02 and 1,278.92 is: 1,765.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.86 : 2,680.02 = 1,278.92 : x
  2. Step 2: Convert to fraction form
    1,941.86/2,680.02 = 1,278.92/x
  3. Step 3: Cross multiply
    1,941.86x = 2,680.02 × 1,278.92
  4. Step 4: Simplify right side
    1,941.86x = 3,427,531.18
  5. Step 5: Solve for x
    x = 3,427,531.18/1,941.86
  6. Step 6: Final answer
    x = 1,765.08

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1.5x scale

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.