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Finding the Fourth Proportional to 8,318.04, 11,476.10 and 5,174

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Solution

The fourth proportional to 8,318.04, 11,476.10 and 5,174 is: 7,138.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.04 : 11,476.10 = 5,174 : x
  2. Step 2: Convert to fraction form
    8,318.04/11,476.10 = 5,174/x
  3. Step 3: Cross multiply
    8,318.04x = 11,476.10 × 5,174
  4. Step 4: Simplify right side
    8,318.04x = 59,377,341.40
  5. Step 5: Solve for x
    x = 59,377,341.40/8,318.04
  6. Step 6: Final answer
    x = 7,138.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.