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Finding the Fourth Proportional to 1,601.62, 2,211.15 and 1,041.81

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Solution

The fourth proportional to 1,601.62, 2,211.15 and 1,041.81 is: 1,438.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.62 : 2,211.15 = 1,041.81 : x
  2. Step 2: Convert to fraction form
    1,601.62/2,211.15 = 1,041.81/x
  3. Step 3: Cross multiply
    1,601.62x = 2,211.15 × 1,041.81
  4. Step 4: Simplify right side
    1,601.62x = 2,303,600.37
  5. Step 5: Solve for x
    x = 2,303,600.37/1,601.62
  6. Step 6: Final answer
    x = 1,438.29

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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.