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Finding the Fourth Proportional to 7,679.04, 11,515.15 and 3,521.67

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Solution

The fourth proportional to 7,679.04, 11,515.15 and 3,521.67 is: 5,280.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.04 : 11,515.15 = 3,521.67 : x
  2. Step 2: Convert to fraction form
    7,679.04/11,515.15 = 3,521.67/x
  3. Step 3: Cross multiply
    7,679.04x = 11,515.15 × 3,521.67
  4. Step 4: Simplify right side
    7,679.04x = 40,552,558.30
  5. Step 5: Solve for x
    x = 40,552,558.30/7,679.04
  6. Step 6: Final answer
    x = 5,280.94

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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.