Home / 7,538.42-11,308.17-1,991.69

Finding the Fourth Proportional to 7,538.42, 11,308.17 and 1,991.69

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Solution

The fourth proportional to 7,538.42, 11,308.17 and 1,991.69 is: 2,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,538.42 : 11,308.17 = 1,991.69 : x
  2. Step 2: Convert to fraction form
    7,538.42/11,308.17 = 1,991.69/x
  3. Step 3: Cross multiply
    7,538.42x = 11,308.17 × 1,991.69
  4. Step 4: Simplify right side
    7,538.42x = 22,522,302.61
  5. Step 5: Solve for x
    x = 22,522,302.61/7,538.42
  6. Step 6: Final answer
    x = 2,987.67

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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.