Home / 8,724.38-12,039.57-4,745.48

Finding the Fourth Proportional to 8,724.38, 12,039.57 and 4,745.48

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Solution

The fourth proportional to 8,724.38, 12,039.57 and 4,745.48 is: 6,548.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,724.38 : 12,039.57 = 4,745.48 : x
  2. Step 2: Convert to fraction form
    8,724.38/12,039.57 = 4,745.48/x
  3. Step 3: Cross multiply
    8,724.38x = 12,039.57 × 4,745.48
  4. Step 4: Simplify right side
    8,724.38x = 57,133,478.45
  5. Step 5: Solve for x
    x = 57,133,478.45/8,724.38
  6. Step 6: Final answer
    x = 6,548.72

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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.