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Finding the Fourth Proportional to 4,122.88, 5,689.92 and 2,260

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Solution

The fourth proportional to 4,122.88, 5,689.92 and 2,260 is: 3,118.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,122.88 : 5,689.92 = 2,260 : x
  2. Step 2: Convert to fraction form
    4,122.88/5,689.92 = 2,260/x
  3. Step 3: Cross multiply
    4,122.88x = 5,689.92 × 2,260
  4. Step 4: Simplify right side
    4,122.88x = 12,859,219.20
  5. Step 5: Solve for x
    x = 12,859,219.20/4,122.88
  6. Step 6: Final answer
    x = 3,118.99

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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.