Home / 2,431.17-3,646.69-699.79

Finding the Fourth Proportional to 2,431.17, 3,646.69 and 699.79

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Solution

The fourth proportional to 2,431.17, 3,646.69 and 699.79 is: 1,049.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.17 : 3,646.69 = 699.79 : x
  2. Step 2: Convert to fraction form
    2,431.17/3,646.69 = 699.79/x
  3. Step 3: Cross multiply
    2,431.17x = 3,646.69 × 699.79
  4. Step 4: Simplify right side
    2,431.17x = 2,551,917.20
  5. Step 5: Solve for x
    x = 2,551,917.20/2,431.17
  6. Step 6: Final answer
    x = 1,049.67

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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.