Home / 1,212.66-1,817.56-1,199.67

Finding the Fourth Proportional to 1,212.66, 1,817.56 and 1,199.67

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Solution

The fourth proportional to 1,212.66, 1,817.56 and 1,199.67 is: 1,798.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.66 : 1,817.56 = 1,199.67 : x
  2. Step 2: Convert to fraction form
    1,212.66/1,817.56 = 1,199.67/x
  3. Step 3: Cross multiply
    1,212.66x = 1,817.56 × 1,199.67
  4. Step 4: Simplify right side
    1,212.66x = 2,180,483.04
  5. Step 5: Solve for x
    x = 2,180,483.04/1,212.66
  6. Step 6: Final answer
    x = 1,798.10

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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.