Home / 7,085.56-9,777.96-3,941.80

Finding the Fourth Proportional to 7,085.56, 9,777.96 and 3,941.80

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Solution

The fourth proportional to 7,085.56, 9,777.96 and 3,941.80 is: 5,439.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.56 : 9,777.96 = 3,941.80 : x
  2. Step 2: Convert to fraction form
    7,085.56/9,777.96 = 3,941.80/x
  3. Step 3: Cross multiply
    7,085.56x = 9,777.96 × 3,941.80
  4. Step 4: Simplify right side
    7,085.56x = 38,542,762.73
  5. Step 5: Solve for x
    x = 38,542,762.73/7,085.56
  6. Step 6: Final answer
    x = 5,439.62

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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.