Home / 2,894.02-3,990.72-2,149.44

Finding the Fourth Proportional to 2,894.02, 3,990.72 and 2,149.44

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Solution

The fourth proportional to 2,894.02, 3,990.72 and 2,149.44 is: 2,963.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,894.02 : 3,990.72 = 2,149.44 : x
  2. Step 2: Convert to fraction form
    2,894.02/3,990.72 = 2,149.44/x
  3. Step 3: Cross multiply
    2,894.02x = 3,990.72 × 2,149.44
  4. Step 4: Simplify right side
    2,894.02x = 8,577,813.20
  5. Step 5: Solve for x
    x = 8,577,813.20/2,894.02
  6. Step 6: Final answer
    x = 2,963.98

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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.