Home / 1,188.21-1,634.52-966.67

Finding the Fourth Proportional to 1,188.21, 1,634.52 and 966.67

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Solution

The fourth proportional to 1,188.21, 1,634.52 and 966.67 is: 1,329.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188.21 : 1,634.52 = 966.67 : x
  2. Step 2: Convert to fraction form
    1,188.21/1,634.52 = 966.67/x
  3. Step 3: Cross multiply
    1,188.21x = 1,634.52 × 966.67
  4. Step 4: Simplify right side
    1,188.21x = 1,580,041.45
  5. Step 5: Solve for x
    x = 1,580,041.45/1,188.21
  6. Step 6: Final answer
    x = 1,329.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.