Home / 2,790.29-3,850.51-1,531.33

Finding the Fourth Proportional to 2,790.29, 3,850.51 and 1,531.33

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Solution

The fourth proportional to 2,790.29, 3,850.51 and 1,531.33 is: 2,113.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.29 : 3,850.51 = 1,531.33 : x
  2. Step 2: Convert to fraction form
    2,790.29/3,850.51 = 1,531.33/x
  3. Step 3: Cross multiply
    2,790.29x = 3,850.51 × 1,531.33
  4. Step 4: Simplify right side
    2,790.29x = 5,896,401.48
  5. Step 5: Solve for x
    x = 5,896,401.48/2,790.29
  6. Step 6: Final answer
    x = 2,113.19

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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.