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Finding the Fourth Proportional to 3,492.78, 4,821.49 and 2,315.44

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Solution

The fourth proportional to 3,492.78, 4,821.49 and 2,315.44 is: 3,196.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,492.78 : 4,821.49 = 2,315.44 : x
  2. Step 2: Convert to fraction form
    3,492.78/4,821.49 = 2,315.44/x
  3. Step 3: Cross multiply
    3,492.78x = 4,821.49 × 2,315.44
  4. Step 4: Simplify right side
    3,492.78x = 11,163,870.81
  5. Step 5: Solve for x
    x = 11,163,870.81/3,492.78
  6. Step 6: Final answer
    x = 3,196.27

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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.