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Finding the Fourth Proportional to 2,818.88, 4,227.28 and 969.48

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Solution

The fourth proportional to 2,818.88, 4,227.28 and 969.48 is: 1,453.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.88 : 4,227.28 = 969.48 : x
  2. Step 2: Convert to fraction form
    2,818.88/4,227.28 = 969.48/x
  3. Step 3: Cross multiply
    2,818.88x = 4,227.28 × 969.48
  4. Step 4: Simplify right side
    2,818.88x = 4,098,263.41
  5. Step 5: Solve for x
    x = 4,098,263.41/2,818.88
  6. Step 6: Final answer
    x = 1,453.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.