Home / 2,666.94-3,681.38-2,005.72

Finding the Fourth Proportional to 2,666.94, 3,681.38 and 2,005.72

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Solution

The fourth proportional to 2,666.94, 3,681.38 and 2,005.72 is: 2,768.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.94 : 3,681.38 = 2,005.72 : x
  2. Step 2: Convert to fraction form
    2,666.94/3,681.38 = 2,005.72/x
  3. Step 3: Cross multiply
    2,666.94x = 3,681.38 × 2,005.72
  4. Step 4: Simplify right side
    2,666.94x = 7,383,817.49
  5. Step 5: Solve for x
    x = 7,383,817.49/2,666.94
  6. Step 6: Final answer
    x = 2,768.65

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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.