Home / 2,118.30-3,176.53-1,631.70

Finding the Fourth Proportional to 2,118.30, 3,176.53 and 1,631.70

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Solution

The fourth proportional to 2,118.30, 3,176.53 and 1,631.70 is: 2,446.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.30 : 3,176.53 = 1,631.70 : x
  2. Step 2: Convert to fraction form
    2,118.30/3,176.53 = 1,631.70/x
  3. Step 3: Cross multiply
    2,118.30x = 3,176.53 × 1,631.70
  4. Step 4: Simplify right side
    2,118.30x = 5,183,144.00
  5. Step 5: Solve for x
    x = 5,183,144.00/2,118.30
  6. Step 6: Final answer
    x = 2,446.84

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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.