Home / 8,771.69-13,157.55-2,928.75

Finding the Fourth Proportional to 8,771.69, 13,157.55 and 2,928.75

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Solution

The fourth proportional to 8,771.69, 13,157.55 and 2,928.75 is: 4,393.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.69 : 13,157.55 = 2,928.75 : x
  2. Step 2: Convert to fraction form
    8,771.69/13,157.55 = 2,928.75/x
  3. Step 3: Cross multiply
    8,771.69x = 13,157.55 × 2,928.75
  4. Step 4: Simplify right side
    8,771.69x = 38,535,174.56
  5. Step 5: Solve for x
    x = 38,535,174.56/8,771.69
  6. Step 6: Final answer
    x = 4,393.13

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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.