Home / 2,278.03-3,143.63-1,283.30

Finding the Fourth Proportional to 2,278.03, 3,143.63 and 1,283.30

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Solution

The fourth proportional to 2,278.03, 3,143.63 and 1,283.30 is: 1,770.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.03 : 3,143.63 = 1,283.30 : x
  2. Step 2: Convert to fraction form
    2,278.03/3,143.63 = 1,283.30/x
  3. Step 3: Cross multiply
    2,278.03x = 3,143.63 × 1,283.30
  4. Step 4: Simplify right side
    2,278.03x = 4,034,220.38
  5. Step 5: Solve for x
    x = 4,034,220.38/2,278.03
  6. Step 6: Final answer
    x = 1,770.93

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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.