Home / 2,278.42-3,143.67-1,747.84

Finding the Fourth Proportional to 2,278.42, 3,143.67 and 1,747.84

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Solution

The fourth proportional to 2,278.42, 3,143.67 and 1,747.84 is: 2,411.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.42 : 3,143.67 = 1,747.84 : x
  2. Step 2: Convert to fraction form
    2,278.42/3,143.67 = 1,747.84/x
  3. Step 3: Cross multiply
    2,278.42x = 3,143.67 × 1,747.84
  4. Step 4: Simplify right side
    2,278.42x = 5,494,632.17
  5. Step 5: Solve for x
    x = 5,494,632.17/2,278.42
  6. Step 6: Final answer
    x = 2,411.60

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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.