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Finding the Fourth Proportional to 7,269.05, 10,904.78 and 3,570.78

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Solution

The fourth proportional to 7,269.05, 10,904.78 and 3,570.78 is: 5,356.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,269.05 : 10,904.78 = 3,570.78 : x
  2. Step 2: Convert to fraction form
    7,269.05/10,904.78 = 3,570.78/x
  3. Step 3: Cross multiply
    7,269.05x = 10,904.78 × 3,570.78
  4. Step 4: Simplify right side
    7,269.05x = 38,938,552.47
  5. Step 5: Solve for x
    x = 38,938,552.47/7,269.05
  6. Step 6: Final answer
    x = 5,356.76

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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.