Home / 8,157.85-12,232.59-3,991.57

Finding the Fourth Proportional to 8,157.85, 12,232.59 and 3,991.57

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Solution

The fourth proportional to 8,157.85, 12,232.59 and 3,991.57 is: 5,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.85 : 12,232.59 = 3,991.57 : x
  2. Step 2: Convert to fraction form
    8,157.85/12,232.59 = 3,991.57/x
  3. Step 3: Cross multiply
    8,157.85x = 12,232.59 × 3,991.57
  4. Step 4: Simplify right side
    8,157.85x = 48,827,239.27
  5. Step 5: Solve for x
    x = 48,827,239.27/8,157.85
  6. Step 6: Final answer
    x = 5,985.31

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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.