Home / 5,136.80-7,705.20-4,958.60

Finding the Fourth Proportional to 5,136.80, 7,705.20 and 4,958.60

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Solution

The fourth proportional to 5,136.80, 7,705.20 and 4,958.60 is: 7,437.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.80 : 7,705.20 = 4,958.60 : x
  2. Step 2: Convert to fraction form
    5,136.80/7,705.20 = 4,958.60/x
  3. Step 3: Cross multiply
    5,136.80x = 7,705.20 × 4,958.60
  4. Step 4: Simplify right side
    5,136.80x = 38,207,004.72
  5. Step 5: Solve for x
    x = 38,207,004.72/5,136.80
  6. Step 6: Final answer
    x = 7,437.90

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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.