Home / 5,808.38-8,015.60-3,155.78

Finding the Fourth Proportional to 5,808.38, 8,015.60 and 3,155.78

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Solution

The fourth proportional to 5,808.38, 8,015.60 and 3,155.78 is: 4,355.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,808.38 : 8,015.60 = 3,155.78 : x
  2. Step 2: Convert to fraction form
    5,808.38/8,015.60 = 3,155.78/x
  3. Step 3: Cross multiply
    5,808.38x = 8,015.60 × 3,155.78
  4. Step 4: Simplify right side
    5,808.38x = 25,295,474.43
  5. Step 5: Solve for x
    x = 25,295,474.43/5,808.38
  6. Step 6: Final answer
    x = 4,355.00

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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.