Home / 4,119.21-5,689.13-2,790.61

Finding the Fourth Proportional to 4,119.21, 5,689.13 and 2,790.61

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Solution

The fourth proportional to 4,119.21, 5,689.13 and 2,790.61 is: 3,854.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,119.21 : 5,689.13 = 2,790.61 : x
  2. Step 2: Convert to fraction form
    4,119.21/5,689.13 = 2,790.61/x
  3. Step 3: Cross multiply
    4,119.21x = 5,689.13 × 2,790.61
  4. Step 4: Simplify right side
    4,119.21x = 15,876,114.89
  5. Step 5: Solve for x
    x = 15,876,114.89/4,119.21
  6. Step 6: Final answer
    x = 3,854.16

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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.