Home / 3,899.20-5,846.60-3,438.08

Finding the Fourth Proportional to 3,899.20, 5,846.60 and 3,438.08

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Solution

The fourth proportional to 3,899.20, 5,846.60 and 3,438.08 is: 5,155.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.20 : 5,846.60 = 3,438.08 : x
  2. Step 2: Convert to fraction form
    3,899.20/5,846.60 = 3,438.08/x
  3. Step 3: Cross multiply
    3,899.20x = 5,846.60 × 3,438.08
  4. Step 4: Simplify right side
    3,899.20x = 20,101,078.53
  5. Step 5: Solve for x
    x = 20,101,078.53/3,899.20
  6. Step 6: Final answer
    x = 5,155.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.