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Finding the Fourth Proportional to 3,056, 4,217.24 and 1,658.80

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Solution

The fourth proportional to 3,056, 4,217.24 and 1,658.80 is: 2,289.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,056 : 4,217.24 = 1,658.80 : x
  2. Step 2: Convert to fraction form
    3,056/4,217.24 = 1,658.80/x
  3. Step 3: Cross multiply
    3,056x = 4,217.24 × 1,658.80
  4. Step 4: Simplify right side
    3,056x = 6,995,557.71
  5. Step 5: Solve for x
    x = 6,995,557.71/3,056
  6. Step 6: Final answer
    x = 2,289.12

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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.