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Finding the Fourth Proportional to 5,328.45, 7,338.06 and 5,213.97

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Solution

The fourth proportional to 5,328.45, 7,338.06 and 5,213.97 is: 7,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.45 : 7,338.06 = 5,213.97 : x
  2. Step 2: Convert to fraction form
    5,328.45/7,338.06 = 5,213.97/x
  3. Step 3: Cross multiply
    5,328.45x = 7,338.06 × 5,213.97
  4. Step 4: Simplify right side
    5,328.45x = 38,260,424.70
  5. Step 5: Solve for x
    x = 38,260,424.70/5,328.45
  6. Step 6: Final answer
    x = 7,180.40

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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.