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Finding the Fourth Proportional to 3,570.66, 5,356.80 and 1,105.56

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Solution

The fourth proportional to 3,570.66, 5,356.80 and 1,105.56 is: 1,658.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570.66 : 5,356.80 = 1,105.56 : x
  2. Step 2: Convert to fraction form
    3,570.66/5,356.80 = 1,105.56/x
  3. Step 3: Cross multiply
    3,570.66x = 5,356.80 × 1,105.56
  4. Step 4: Simplify right side
    3,570.66x = 5,922,263.81
  5. Step 5: Solve for x
    x = 5,922,263.81/3,570.66
  6. Step 6: Final answer
    x = 1,658.59

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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.