Home / 8,979.76-13,475.79-3,136.35

Finding the Fourth Proportional to 8,979.76, 13,475.79 and 3,136.35

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Solution

The fourth proportional to 8,979.76, 13,475.79 and 3,136.35 is: 4,706.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.76 : 13,475.79 = 3,136.35 : x
  2. Step 2: Convert to fraction form
    8,979.76/13,475.79 = 3,136.35/x
  3. Step 3: Cross multiply
    8,979.76x = 13,475.79 × 3,136.35
  4. Step 4: Simplify right side
    8,979.76x = 42,264,793.97
  5. Step 5: Solve for x
    x = 42,264,793.97/8,979.76
  6. Step 6: Final answer
    x = 4,706.67

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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.