Home / 8,912.72-12,305.16-5,727.44

Finding the Fourth Proportional to 8,912.72, 12,305.16 and 5,727.44

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Solution

The fourth proportional to 8,912.72, 12,305.16 and 5,727.44 is: 7,907.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.72 : 12,305.16 = 5,727.44 : x
  2. Step 2: Convert to fraction form
    8,912.72/12,305.16 = 5,727.44/x
  3. Step 3: Cross multiply
    8,912.72x = 12,305.16 × 5,727.44
  4. Step 4: Simplify right side
    8,912.72x = 70,477,065.59
  5. Step 5: Solve for x
    x = 70,477,065.59/8,912.72
  6. Step 6: Final answer
    x = 7,907.47

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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.