Home / 2,246.78-3,370.19-686.75

Finding the Fourth Proportional to 2,246.78, 3,370.19 and 686.75

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Solution

The fourth proportional to 2,246.78, 3,370.19 and 686.75 is: 1,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,246.78 : 3,370.19 = 686.75 : x
  2. Step 2: Convert to fraction form
    2,246.78/3,370.19 = 686.75/x
  3. Step 3: Cross multiply
    2,246.78x = 3,370.19 × 686.75
  4. Step 4: Simplify right side
    2,246.78x = 2,314,457.70
  5. Step 5: Solve for x
    x = 2,314,457.70/2,246.78
  6. Step 6: Final answer
    x = 1,030.12

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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.