Home / 2,790.02-3,850.33-1,531.11

Finding the Fourth Proportional to 2,790.02, 3,850.33 and 1,531.11

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Solution

The fourth proportional to 2,790.02, 3,850.33 and 1,531.11 is: 2,112.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.02 : 3,850.33 = 1,531.11 : x
  2. Step 2: Convert to fraction form
    2,790.02/3,850.33 = 1,531.11/x
  3. Step 3: Cross multiply
    2,790.02x = 3,850.33 × 1,531.11
  4. Step 4: Simplify right side
    2,790.02x = 5,895,292.92
  5. Step 5: Solve for x
    x = 5,895,292.92/2,790.02
  6. Step 6: Final answer
    x = 2,112.99

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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.