Home / 2,767.49-3,815.07-1,980.17

Finding the Fourth Proportional to 2,767.49, 3,815.07 and 1,980.17

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Solution

The fourth proportional to 2,767.49, 3,815.07 and 1,980.17 is: 2,729.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,767.49 : 3,815.07 = 1,980.17 : x
  2. Step 2: Convert to fraction form
    2,767.49/3,815.07 = 1,980.17/x
  3. Step 3: Cross multiply
    2,767.49x = 3,815.07 × 1,980.17
  4. Step 4: Simplify right side
    2,767.49x = 7,554,487.16
  5. Step 5: Solve for x
    x = 7,554,487.16/2,767.49
  6. Step 6: Final answer
    x = 2,729.73

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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.