Home / 3,681.30-5,079.36-2,687.12

Finding the Fourth Proportional to 3,681.30, 5,079.36 and 2,687.12

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Solution

The fourth proportional to 3,681.30, 5,079.36 and 2,687.12 is: 3,707.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.30 : 5,079.36 = 2,687.12 : x
  2. Step 2: Convert to fraction form
    3,681.30/5,079.36 = 2,687.12/x
  3. Step 3: Cross multiply
    3,681.30x = 5,079.36 × 2,687.12
  4. Step 4: Simplify right side
    3,681.30x = 13,648,849.84
  5. Step 5: Solve for x
    x = 13,648,849.84/3,681.30
  6. Step 6: Final answer
    x = 3,707.62

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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.