Home / 4,120.74-5,687.46-3,788.64

Finding the Fourth Proportional to 4,120.74, 5,687.46 and 3,788.64

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Solution

The fourth proportional to 4,120.74, 5,687.46 and 3,788.64 is: 5,229.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.74 : 5,687.46 = 3,788.64 : x
  2. Step 2: Convert to fraction form
    4,120.74/5,687.46 = 3,788.64/x
  3. Step 3: Cross multiply
    4,120.74x = 5,687.46 × 3,788.64
  4. Step 4: Simplify right side
    4,120.74x = 21,547,738.45
  5. Step 5: Solve for x
    x = 21,547,738.45/4,120.74
  6. Step 6: Final answer
    x = 5,229.09

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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.