Home / 3,146.19-4,721.40-2,170.55

Finding the Fourth Proportional to 3,146.19, 4,721.40 and 2,170.55

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Solution

The fourth proportional to 3,146.19, 4,721.40 and 2,170.55 is: 3,257.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.19 : 4,721.40 = 2,170.55 : x
  2. Step 2: Convert to fraction form
    3,146.19/4,721.40 = 2,170.55/x
  3. Step 3: Cross multiply
    3,146.19x = 4,721.40 × 2,170.55
  4. Step 4: Simplify right side
    3,146.19x = 10,248,011.16
  5. Step 5: Solve for x
    x = 10,248,011.16/3,146.19
  6. Step 6: Final answer
    x = 3,257.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.