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Finding the Fourth Proportional to 2,772.23, 4,156.95 and 922.69

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Solution

The fourth proportional to 2,772.23, 4,156.95 and 922.69 is: 1,383.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.23 : 4,156.95 = 922.69 : x
  2. Step 2: Convert to fraction form
    2,772.23/4,156.95 = 922.69/x
  3. Step 3: Cross multiply
    2,772.23x = 4,156.95 × 922.69
  4. Step 4: Simplify right side
    2,772.23x = 3,835,576.20
  5. Step 5: Solve for x
    x = 3,835,576.20/2,772.23
  6. Step 6: Final answer
    x = 1,383.57

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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.