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Finding the Fourth Proportional to 1,081.59, 1,618.62 and 1,050.39

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Solution

The fourth proportional to 1,081.59, 1,618.62 and 1,050.39 is: 1,571.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.59 : 1,618.62 = 1,050.39 : x
  2. Step 2: Convert to fraction form
    1,081.59/1,618.62 = 1,050.39/x
  3. Step 3: Cross multiply
    1,081.59x = 1,618.62 × 1,050.39
  4. Step 4: Simplify right side
    1,081.59x = 1,700,182.26
  5. Step 5: Solve for x
    x = 1,700,182.26/1,081.59
  6. Step 6: Final answer
    x = 1,571.93

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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.