Home / 2,790.94-3,851.13-2,225.20

Finding the Fourth Proportional to 2,790.94, 3,851.13 and 2,225.20

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Solution

The fourth proportional to 2,790.94, 3,851.13 and 2,225.20 is: 3,070.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.94 : 3,851.13 = 2,225.20 : x
  2. Step 2: Convert to fraction form
    2,790.94/3,851.13 = 2,225.20/x
  3. Step 3: Cross multiply
    2,790.94x = 3,851.13 × 2,225.20
  4. Step 4: Simplify right side
    2,790.94x = 8,569,534.48
  5. Step 5: Solve for x
    x = 8,569,534.48/2,790.94
  6. Step 6: Final answer
    x = 3,070.48

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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.