Home / 4,178.48-5,764.68-2,686.20

Finding the Fourth Proportional to 4,178.48, 5,764.68 and 2,686.20

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Solution

The fourth proportional to 4,178.48, 5,764.68 and 2,686.20 is: 3,705.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.48 : 5,764.68 = 2,686.20 : x
  2. Step 2: Convert to fraction form
    4,178.48/5,764.68 = 2,686.20/x
  3. Step 3: Cross multiply
    4,178.48x = 5,764.68 × 2,686.20
  4. Step 4: Simplify right side
    4,178.48x = 15,485,083.42
  5. Step 5: Solve for x
    x = 15,485,083.42/4,178.48
  6. Step 6: Final answer
    x = 3,705.91

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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.