Home / 1,940.66-2,677.45-1,278.18

Finding the Fourth Proportional to 1,940.66, 2,677.45 and 1,278.18

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Solution

The fourth proportional to 1,940.66, 2,677.45 and 1,278.18 is: 1,763.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.66 : 2,677.45 = 1,278.18 : x
  2. Step 2: Convert to fraction form
    1,940.66/2,677.45 = 1,278.18/x
  3. Step 3: Cross multiply
    1,940.66x = 2,677.45 × 1,278.18
  4. Step 4: Simplify right side
    1,940.66x = 3,422,263.04
  5. Step 5: Solve for x
    x = 3,422,263.04/1,940.66
  6. Step 6: Final answer
    x = 1,763.45

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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.