Home / 3,966.40-5,471.88-2,788.24

Finding the Fourth Proportional to 3,966.40, 5,471.88 and 2,788.24

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Solution

The fourth proportional to 3,966.40, 5,471.88 and 2,788.24 is: 3,846.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,966.40 : 5,471.88 = 2,788.24 : x
  2. Step 2: Convert to fraction form
    3,966.40/5,471.88 = 2,788.24/x
  3. Step 3: Cross multiply
    3,966.40x = 5,471.88 × 2,788.24
  4. Step 4: Simplify right side
    3,966.40x = 15,256,914.69
  5. Step 5: Solve for x
    x = 15,256,914.69/3,966.40
  6. Step 6: Final answer
    x = 3,846.54

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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.