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Finding the Fourth Proportional to 3,492.99, 4,821.53 and 3,389.31

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Solution

The fourth proportional to 3,492.99, 4,821.53 and 3,389.31 is: 4,678.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,492.99 : 4,821.53 = 3,389.31 : x
  2. Step 2: Convert to fraction form
    3,492.99/4,821.53 = 3,389.31/x
  3. Step 3: Cross multiply
    3,492.99x = 4,821.53 × 3,389.31
  4. Step 4: Simplify right side
    3,492.99x = 16,341,642.90
  5. Step 5: Solve for x
    x = 16,341,642.90/3,492.99
  6. Step 6: Final answer
    x = 4,678.41

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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.