Home / 2,178.87-3,006.83-1,283.13

Finding the Fourth Proportional to 2,178.87, 3,006.83 and 1,283.13

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Solution

The fourth proportional to 2,178.87, 3,006.83 and 1,283.13 is: 1,770.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.87 : 3,006.83 = 1,283.13 : x
  2. Step 2: Convert to fraction form
    2,178.87/3,006.83 = 1,283.13/x
  3. Step 3: Cross multiply
    2,178.87x = 3,006.83 × 1,283.13
  4. Step 4: Simplify right side
    2,178.87x = 3,858,153.78
  5. Step 5: Solve for x
    x = 3,858,153.78/2,178.87
  6. Step 6: Final answer
    x = 1,770.71

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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.