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Finding the Fourth Proportional to 2,212.01, 3,316.86 and 651.80

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Solution

The fourth proportional to 2,212.01, 3,316.86 and 651.80 is: 977.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.01 : 3,316.86 = 651.80 : x
  2. Step 2: Convert to fraction form
    2,212.01/3,316.86 = 651.80/x
  3. Step 3: Cross multiply
    2,212.01x = 3,316.86 × 651.80
  4. Step 4: Simplify right side
    2,212.01x = 2,161,936.01
  5. Step 5: Solve for x
    x = 2,161,936.01/2,212.01
  6. Step 6: Final answer
    x = 977.36

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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.