Home / 2,278.14-3,143.88-1,283.46

Finding the Fourth Proportional to 2,278.14, 3,143.88 and 1,283.46

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Solution

The fourth proportional to 2,278.14, 3,143.88 and 1,283.46 is: 1,771.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.14 : 3,143.88 = 1,283.46 : x
  2. Step 2: Convert to fraction form
    2,278.14/3,143.88 = 1,283.46/x
  3. Step 3: Cross multiply
    2,278.14x = 3,143.88 × 1,283.46
  4. Step 4: Simplify right side
    2,278.14x = 4,035,044.22
  5. Step 5: Solve for x
    x = 4,035,044.22/2,278.14
  6. Step 6: Final answer
    x = 1,771.20

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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.