Home / 6,689.30-9,231.75-3,705.41

Finding the Fourth Proportional to 6,689.30, 9,231.75 and 3,705.41

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Solution

The fourth proportional to 6,689.30, 9,231.75 and 3,705.41 is: 5,113.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.30 : 9,231.75 = 3,705.41 : x
  2. Step 2: Convert to fraction form
    6,689.30/9,231.75 = 3,705.41/x
  3. Step 3: Cross multiply
    6,689.30x = 9,231.75 × 3,705.41
  4. Step 4: Simplify right side
    6,689.30x = 34,207,441.85
  5. Step 5: Solve for x
    x = 34,207,441.85/6,689.30
  6. Step 6: Final answer
    x = 5,113.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.