Home / 7,387.72-11,078.75-3,170.59

Finding the Fourth Proportional to 7,387.72, 11,078.75 and 3,170.59

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Solution

The fourth proportional to 7,387.72, 11,078.75 and 3,170.59 is: 4,754.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,387.72 : 11,078.75 = 3,170.59 : x
  2. Step 2: Convert to fraction form
    7,387.72/11,078.75 = 3,170.59/x
  3. Step 3: Cross multiply
    7,387.72x = 11,078.75 × 3,170.59
  4. Step 4: Simplify right side
    7,387.72x = 35,126,154.19
  5. Step 5: Solve for x
    x = 35,126,154.19/7,387.72
  6. Step 6: Final answer
    x = 4,754.67

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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.