Home / 8,724.87-12,034.21-5,739.75

Finding the Fourth Proportional to 8,724.87, 12,034.21 and 5,739.75

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Solution

The fourth proportional to 8,724.87, 12,034.21 and 5,739.75 is: 7,916.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,724.87 : 12,034.21 = 5,739.75 : x
  2. Step 2: Convert to fraction form
    8,724.87/12,034.21 = 5,739.75/x
  3. Step 3: Cross multiply
    8,724.87x = 12,034.21 × 5,739.75
  4. Step 4: Simplify right side
    8,724.87x = 69,073,356.85
  5. Step 5: Solve for x
    x = 69,073,356.85/8,724.87
  6. Step 6: Final answer
    x = 7,916.84

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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.