Home / 3,900.15-5,392.58-3,408.08

Finding the Fourth Proportional to 3,900.15, 5,392.58 and 3,408.08

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Solution

The fourth proportional to 3,900.15, 5,392.58 and 3,408.08 is: 4,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.15 : 5,392.58 = 3,408.08 : x
  2. Step 2: Convert to fraction form
    3,900.15/5,392.58 = 3,408.08/x
  3. Step 3: Cross multiply
    3,900.15x = 5,392.58 × 3,408.08
  4. Step 4: Simplify right side
    3,900.15x = 18,378,300.04
  5. Step 5: Solve for x
    x = 18,378,300.04/3,900.15
  6. Step 6: Final answer
    x = 4,712.20

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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.