Home / 2,815.10-4,222.65-2,512.70

Finding the Fourth Proportional to 2,815.10, 4,222.65 and 2,512.70

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Solution

The fourth proportional to 2,815.10, 4,222.65 and 2,512.70 is: 3,769.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.10 : 4,222.65 = 2,512.70 : x
  2. Step 2: Convert to fraction form
    2,815.10/4,222.65 = 2,512.70/x
  3. Step 3: Cross multiply
    2,815.10x = 4,222.65 × 2,512.70
  4. Step 4: Simplify right side
    2,815.10x = 10,610,252.66
  5. Step 5: Solve for x
    x = 10,610,252.66/2,815.10
  6. Step 6: Final answer
    x = 3,769.05

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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.