Home / 2,680.09-3,699.61-1,685.61

Finding the Fourth Proportional to 2,680.09, 3,699.61 and 1,685.61

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Solution

The fourth proportional to 2,680.09, 3,699.61 and 1,685.61 is: 2,326.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.09 : 3,699.61 = 1,685.61 : x
  2. Step 2: Convert to fraction form
    2,680.09/3,699.61 = 1,685.61/x
  3. Step 3: Cross multiply
    2,680.09x = 3,699.61 × 1,685.61
  4. Step 4: Simplify right side
    2,680.09x = 6,236,095.40
  5. Step 5: Solve for x
    x = 6,236,095.40/2,680.09
  6. Step 6: Final answer
    x = 2,326.83

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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.