Home / 3,127.78-4,315.49-1,868.28

Finding the Fourth Proportional to 3,127.78, 4,315.49 and 1,868.28

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Solution

The fourth proportional to 3,127.78, 4,315.49 and 1,868.28 is: 2,577.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.78 : 4,315.49 = 1,868.28 : x
  2. Step 2: Convert to fraction form
    3,127.78/4,315.49 = 1,868.28/x
  3. Step 3: Cross multiply
    3,127.78x = 4,315.49 × 1,868.28
  4. Step 4: Simplify right side
    3,127.78x = 8,062,525.14
  5. Step 5: Solve for x
    x = 8,062,525.14/3,127.78
  6. Step 6: Final answer
    x = 2,577.71

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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.