Home / 8,739.60-12,057.72-5,200.80

Finding the Fourth Proportional to 8,739.60, 12,057.72 and 5,200.80

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Solution

The fourth proportional to 8,739.60, 12,057.72 and 5,200.80 is: 7,175.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.60 : 12,057.72 = 5,200.80 : x
  2. Step 2: Convert to fraction form
    8,739.60/12,057.72 = 5,200.80/x
  3. Step 3: Cross multiply
    8,739.60x = 12,057.72 × 5,200.80
  4. Step 4: Simplify right side
    8,739.60x = 62,709,790.18
  5. Step 5: Solve for x
    x = 62,709,790.18/8,739.60
  6. Step 6: Final answer
    x = 7,175.36

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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.