Home / 2,790.02-3,850.16-1,531.07

Finding the Fourth Proportional to 2,790.02, 3,850.16 and 1,531.07

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Solution

The fourth proportional to 2,790.02, 3,850.16 and 1,531.07 is: 2,112.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.02 : 3,850.16 = 1,531.07 : x
  2. Step 2: Convert to fraction form
    2,790.02/3,850.16 = 1,531.07/x
  3. Step 3: Cross multiply
    2,790.02x = 3,850.16 × 1,531.07
  4. Step 4: Simplify right side
    2,790.02x = 5,894,852.00
  5. Step 5: Solve for x
    x = 5,894,852.00/2,790.02
  6. Step 6: Final answer
    x = 2,112.83

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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.