Home / 2,112.10-3,167.32-630.90

Finding the Fourth Proportional to 2,112.10, 3,167.32 and 630.90

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Solution

The fourth proportional to 2,112.10, 3,167.32 and 630.90 is: 946.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.10 : 3,167.32 = 630.90 : x
  2. Step 2: Convert to fraction form
    2,112.10/3,167.32 = 630.90/x
  3. Step 3: Cross multiply
    2,112.10x = 3,167.32 × 630.90
  4. Step 4: Simplify right side
    2,112.10x = 1,998,262.19
  5. Step 5: Solve for x
    x = 1,998,262.19/2,112.10
  6. Step 6: Final answer
    x = 946.10

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1.5x scale

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.