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Finding the Fourth Proportional to 2,945.52, 4,057.20 and 2,797.20

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Solution

The fourth proportional to 2,945.52, 4,057.20 and 2,797.20 is: 3,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.52 : 4,057.20 = 2,797.20 : x
  2. Step 2: Convert to fraction form
    2,945.52/4,057.20 = 2,797.20/x
  3. Step 3: Cross multiply
    2,945.52x = 4,057.20 × 2,797.20
  4. Step 4: Simplify right side
    2,945.52x = 11,348,799.84
  5. Step 5: Solve for x
    x = 11,348,799.84/2,945.52
  6. Step 6: Final answer
    x = 3,852.90

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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.