Home / 5,631.12-8,446.70-3,321

Finding the Fourth Proportional to 5,631.12, 8,446.70 and 3,321

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Solution

The fourth proportional to 5,631.12, 8,446.70 and 3,321 is: 4,981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.12 : 8,446.70 = 3,321 : x
  2. Step 2: Convert to fraction form
    5,631.12/8,446.70 = 3,321/x
  3. Step 3: Cross multiply
    5,631.12x = 8,446.70 × 3,321
  4. Step 4: Simplify right side
    5,631.12x = 28,051,490.70
  5. Step 5: Solve for x
    x = 28,051,490.70/5,631.12
  6. Step 6: Final answer
    x = 4,981.51

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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.