Home / 3,679.04-5,077.68-2,687.60

Finding the Fourth Proportional to 3,679.04, 5,077.68 and 2,687.60

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Solution

The fourth proportional to 3,679.04, 5,077.68 and 2,687.60 is: 3,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.04 : 5,077.68 = 2,687.60 : x
  2. Step 2: Convert to fraction form
    3,679.04/5,077.68 = 2,687.60/x
  3. Step 3: Cross multiply
    3,679.04x = 5,077.68 × 2,687.60
  4. Step 4: Simplify right side
    3,679.04x = 13,646,772.77
  5. Step 5: Solve for x
    x = 13,646,772.77/3,679.04
  6. Step 6: Final answer
    x = 3,709.33

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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.