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Finding the Fourth Proportional to 2,602.20, 3,895.20 and 2,521.20

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Solution

The fourth proportional to 2,602.20, 3,895.20 and 2,521.20 is: 3,773.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,602.20 : 3,895.20 = 2,521.20 : x
  2. Step 2: Convert to fraction form
    2,602.20/3,895.20 = 2,521.20/x
  3. Step 3: Cross multiply
    2,602.20x = 3,895.20 × 2,521.20
  4. Step 4: Simplify right side
    2,602.20x = 9,820,578.24
  5. Step 5: Solve for x
    x = 9,820,578.24/2,602.20
  6. Step 6: Final answer
    x = 3,773.95

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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.