Home / 2,278.65-3,144.49-1,283.90

Finding the Fourth Proportional to 2,278.65, 3,144.49 and 1,283.90

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Solution

The fourth proportional to 2,278.65, 3,144.49 and 1,283.90 is: 1,771.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.65 : 3,144.49 = 1,283.90 : x
  2. Step 2: Convert to fraction form
    2,278.65/3,144.49 = 1,283.90/x
  3. Step 3: Cross multiply
    2,278.65x = 3,144.49 × 1,283.90
  4. Step 4: Simplify right side
    2,278.65x = 4,037,210.71
  5. Step 5: Solve for x
    x = 4,037,210.71/2,278.65
  6. Step 6: Final answer
    x = 1,771.76

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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.