Home / 8,947.74-13,421.61-3,399.78

Finding the Fourth Proportional to 8,947.74, 13,421.61 and 3,399.78

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Solution

The fourth proportional to 8,947.74, 13,421.61 and 3,399.78 is: 5,099.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,947.74 : 13,421.61 = 3,399.78 : x
  2. Step 2: Convert to fraction form
    8,947.74/13,421.61 = 3,399.78/x
  3. Step 3: Cross multiply
    8,947.74x = 13,421.61 × 3,399.78
  4. Step 4: Simplify right side
    8,947.74x = 45,630,521.25
  5. Step 5: Solve for x
    x = 45,630,521.25/8,947.74
  6. Step 6: Final answer
    x = 5,099.67

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Similar ratio
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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.