Home / 2,770.15-4,155.40-1,310.71

Finding the Fourth Proportional to 2,770.15, 4,155.40 and 1,310.71

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Solution

The fourth proportional to 2,770.15, 4,155.40 and 1,310.71 is: 1,966.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.15 : 4,155.40 = 1,310.71 : x
  2. Step 2: Convert to fraction form
    2,770.15/4,155.40 = 1,310.71/x
  3. Step 3: Cross multiply
    2,770.15x = 4,155.40 × 1,310.71
  4. Step 4: Simplify right side
    2,770.15x = 5,446,524.33
  5. Step 5: Solve for x
    x = 5,446,524.33/2,770.15
  6. Step 6: Final answer
    x = 1,966.15

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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.