Home / 2,790.10-3,850.40-1,671.14

Finding the Fourth Proportional to 2,790.10, 3,850.40 and 1,671.14

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Solution

The fourth proportional to 2,790.10, 3,850.40 and 1,671.14 is: 2,306.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.10 : 3,850.40 = 1,671.14 : x
  2. Step 2: Convert to fraction form
    2,790.10/3,850.40 = 1,671.14/x
  3. Step 3: Cross multiply
    2,790.10x = 3,850.40 × 1,671.14
  4. Step 4: Simplify right side
    2,790.10x = 6,434,557.46
  5. Step 5: Solve for x
    x = 6,434,557.46/2,790.10
  6. Step 6: Final answer
    x = 2,306.21

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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.