Home / 2,790.16-3,849.36-1,671.12

Finding the Fourth Proportional to 2,790.16, 3,849.36 and 1,671.12

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Solution

The fourth proportional to 2,790.16, 3,849.36 and 1,671.12 is: 2,305.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.16 : 3,849.36 = 1,671.12 : x
  2. Step 2: Convert to fraction form
    2,790.16/3,849.36 = 1,671.12/x
  3. Step 3: Cross multiply
    2,790.16x = 3,849.36 × 1,671.12
  4. Step 4: Simplify right side
    2,790.16x = 6,432,742.48
  5. Step 5: Solve for x
    x = 6,432,742.48/2,790.16
  6. Step 6: Final answer
    x = 2,305.51

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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.