Home / 2,857.02-3,944.34-2,229

Finding the Fourth Proportional to 2,857.02, 3,944.34 and 2,229

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Solution

The fourth proportional to 2,857.02, 3,944.34 and 2,229 is: 3,077.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.02 : 3,944.34 = 2,229 : x
  2. Step 2: Convert to fraction form
    2,857.02/3,944.34 = 2,229/x
  3. Step 3: Cross multiply
    2,857.02x = 3,944.34 × 2,229
  4. Step 4: Simplify right side
    2,857.02x = 8,791,933.86
  5. Step 5: Solve for x
    x = 8,791,933.86/2,857.02
  6. Step 6: Final answer
    x = 3,077.31

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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.