Home / 1,081.14-1,621.63-617.46

Finding the Fourth Proportional to 1,081.14, 1,621.63 and 617.46

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Solution

The fourth proportional to 1,081.14, 1,621.63 and 617.46 is: 926.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.14 : 1,621.63 = 617.46 : x
  2. Step 2: Convert to fraction form
    1,081.14/1,621.63 = 617.46/x
  3. Step 3: Cross multiply
    1,081.14x = 1,621.63 × 617.46
  4. Step 4: Simplify right side
    1,081.14x = 1,001,291.66
  5. Step 5: Solve for x
    x = 1,001,291.66/1,081.14
  6. Step 6: Final answer
    x = 926.14

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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.