Home / 1,093.20-1,638.51-1,081.02

Finding the Fourth Proportional to 1,093.20, 1,638.51 and 1,081.02

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Solution

The fourth proportional to 1,093.20, 1,638.51 and 1,081.02 is: 1,620.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,093.20 : 1,638.51 = 1,081.02 : x
  2. Step 2: Convert to fraction form
    1,093.20/1,638.51 = 1,081.02/x
  3. Step 3: Cross multiply
    1,093.20x = 1,638.51 × 1,081.02
  4. Step 4: Simplify right side
    1,093.20x = 1,771,262.08
  5. Step 5: Solve for x
    x = 1,771,262.08/1,093.20
  6. Step 6: Final answer
    x = 1,620.25

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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.