Home / 8,132.80-12,170.40-7,441.60

Finding the Fourth Proportional to 8,132.80, 12,170.40 and 7,441.60

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Solution

The fourth proportional to 8,132.80, 12,170.40 and 7,441.60 is: 11,136.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,132.80 : 12,170.40 = 7,441.60 : x
  2. Step 2: Convert to fraction form
    8,132.80/12,170.40 = 7,441.60/x
  3. Step 3: Cross multiply
    8,132.80x = 12,170.40 × 7,441.60
  4. Step 4: Simplify right side
    8,132.80x = 90,567,248.64
  5. Step 5: Solve for x
    x = 90,567,248.64/8,132.80
  6. Step 6: Final answer
    x = 11,136.05

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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.