Home / 5,120.82-7,681.69-2,001.05

Finding the Fourth Proportional to 5,120.82, 7,681.69 and 2,001.05

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Solution

The fourth proportional to 5,120.82, 7,681.69 and 2,001.05 is: 3,001.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.82 : 7,681.69 = 2,001.05 : x
  2. Step 2: Convert to fraction form
    5,120.82/7,681.69 = 2,001.05/x
  3. Step 3: Cross multiply
    5,120.82x = 7,681.69 × 2,001.05
  4. Step 4: Simplify right side
    5,120.82x = 15,371,470.63
  5. Step 5: Solve for x
    x = 15,371,470.63/5,120.82
  6. Step 6: Final answer
    x = 3,001.76

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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.