Home / 2,790.77-3,851.19-1,531.82

Finding the Fourth Proportional to 2,790.77, 3,851.19 and 1,531.82

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Solution

The fourth proportional to 2,790.77, 3,851.19 and 1,531.82 is: 2,113.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.77 : 3,851.19 = 1,531.82 : x
  2. Step 2: Convert to fraction form
    2,790.77/3,851.19 = 1,531.82/x
  3. Step 3: Cross multiply
    2,790.77x = 3,851.19 × 1,531.82
  4. Step 4: Simplify right side
    2,790.77x = 5,899,339.49
  5. Step 5: Solve for x
    x = 5,899,339.49/2,790.77
  6. Step 6: Final answer
    x = 2,113.87

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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.