Home / 5,439.42-8,155.89-2,515.05

Finding the Fourth Proportional to 5,439.42, 8,155.89 and 2,515.05

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Solution

The fourth proportional to 5,439.42, 8,155.89 and 2,515.05 is: 3,771.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.42 : 8,155.89 = 2,515.05 : x
  2. Step 2: Convert to fraction form
    5,439.42/8,155.89 = 2,515.05/x
  3. Step 3: Cross multiply
    5,439.42x = 8,155.89 × 2,515.05
  4. Step 4: Simplify right side
    5,439.42x = 20,512,471.14
  5. Step 5: Solve for x
    x = 20,512,471.14/5,439.42
  6. Step 6: Final answer
    x = 3,771.08

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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.