Home / 3,106.20-4,656.60-1,872.30

Finding the Fourth Proportional to 3,106.20, 4,656.60 and 1,872.30

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Solution

The fourth proportional to 3,106.20, 4,656.60 and 1,872.30 is: 2,806.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.20 : 4,656.60 = 1,872.30 : x
  2. Step 2: Convert to fraction form
    3,106.20/4,656.60 = 1,872.30/x
  3. Step 3: Cross multiply
    3,106.20x = 4,656.60 × 1,872.30
  4. Step 4: Simplify right side
    3,106.20x = 8,718,552.18
  5. Step 5: Solve for x
    x = 8,718,552.18/3,106.20
  6. Step 6: Final answer
    x = 2,806.82

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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.