Home / 6,689.60-9,231.65-3,705.45

Finding the Fourth Proportional to 6,689.60, 9,231.65 and 3,705.45

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Solution

The fourth proportional to 6,689.60, 9,231.65 and 3,705.45 is: 5,113.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.60 : 9,231.65 = 3,705.45 : x
  2. Step 2: Convert to fraction form
    6,689.60/9,231.65 = 3,705.45/x
  3. Step 3: Cross multiply
    6,689.60x = 9,231.65 × 3,705.45
  4. Step 4: Simplify right side
    6,689.60x = 34,207,398.97
  5. Step 5: Solve for x
    x = 34,207,398.97/6,689.60
  6. Step 6: Final answer
    x = 5,113.52

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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.