Home / 2,212.10-3,317.06-1,287.98

Finding the Fourth Proportional to 2,212.10, 3,317.06 and 1,287.98

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Solution

The fourth proportional to 2,212.10, 3,317.06 and 1,287.98 is: 1,931.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.10 : 3,317.06 = 1,287.98 : x
  2. Step 2: Convert to fraction form
    2,212.10/3,317.06 = 1,287.98/x
  3. Step 3: Cross multiply
    2,212.10x = 3,317.06 × 1,287.98
  4. Step 4: Simplify right side
    2,212.10x = 4,272,298.49
  5. Step 5: Solve for x
    x = 4,272,298.49/2,212.10
  6. Step 6: Final answer
    x = 1,931.33

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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.