Home / 2,112.15-3,168.26-651.30

Finding the Fourth Proportional to 2,112.15, 3,168.26 and 651.30

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Solution

The fourth proportional to 2,112.15, 3,168.26 and 651.30 is: 976.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.15 : 3,168.26 = 651.30 : x
  2. Step 2: Convert to fraction form
    2,112.15/3,168.26 = 651.30/x
  3. Step 3: Cross multiply
    2,112.15x = 3,168.26 × 651.30
  4. Step 4: Simplify right side
    2,112.15x = 2,063,487.74
  5. Step 5: Solve for x
    x = 2,063,487.74/2,112.15
  6. Step 6: Final answer
    x = 976.96

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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.