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Finding the Fourth Proportional to 7,679.79, 11,501.81 and 7,469.53

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Solution

The fourth proportional to 7,679.79, 11,501.81 and 7,469.53 is: 11,186.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.79 : 11,501.81 = 7,469.53 : x
  2. Step 2: Convert to fraction form
    7,679.79/11,501.81 = 7,469.53/x
  3. Step 3: Cross multiply
    7,679.79x = 11,501.81 × 7,469.53
  4. Step 4: Simplify right side
    7,679.79x = 85,913,133.52
  5. Step 5: Solve for x
    x = 85,913,133.52/7,679.79
  6. Step 6: Final answer
    x = 11,186.91

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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.