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Finding the Fourth Proportional to 7,081.97, 10,621.73 and 1,886.63

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Solution

The fourth proportional to 7,081.97, 10,621.73 and 1,886.63 is: 2,829.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.97 : 10,621.73 = 1,886.63 : x
  2. Step 2: Convert to fraction form
    7,081.97/10,621.73 = 1,886.63/x
  3. Step 3: Cross multiply
    7,081.97x = 10,621.73 × 1,886.63
  4. Step 4: Simplify right side
    7,081.97x = 20,039,226.08
  5. Step 5: Solve for x
    x = 20,039,226.08/7,081.97
  6. Step 6: Final answer
    x = 2,829.61

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1.5x scale

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.