Home / 3,020.19-4,172.07-2,862.55

Finding the Fourth Proportional to 3,020.19, 4,172.07 and 2,862.55

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Solution

The fourth proportional to 3,020.19, 4,172.07 and 2,862.55 is: 3,954.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.19 : 4,172.07 = 2,862.55 : x
  2. Step 2: Convert to fraction form
    3,020.19/4,172.07 = 2,862.55/x
  3. Step 3: Cross multiply
    3,020.19x = 4,172.07 × 2,862.55
  4. Step 4: Simplify right side
    3,020.19x = 11,942,758.98
  5. Step 5: Solve for x
    x = 11,942,758.98/3,020.19
  6. Step 6: Final answer
    x = 3,954.31

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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.