Home / 5,106.95-7,047.80-2,868.78

Finding the Fourth Proportional to 5,106.95, 7,047.80 and 2,868.78

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Solution

The fourth proportional to 5,106.95, 7,047.80 and 2,868.78 is: 3,959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.95 : 7,047.80 = 2,868.78 : x
  2. Step 2: Convert to fraction form
    5,106.95/7,047.80 = 2,868.78/x
  3. Step 3: Cross multiply
    5,106.95x = 7,047.80 × 2,868.78
  4. Step 4: Simplify right side
    5,106.95x = 20,218,587.68
  5. Step 5: Solve for x
    x = 20,218,587.68/5,106.95
  6. Step 6: Final answer
    x = 3,959.03

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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.