Home / 8,772.27-12,105.75-5,235.40

Finding the Fourth Proportional to 8,772.27, 12,105.75 and 5,235.40

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Solution

The fourth proportional to 8,772.27, 12,105.75 and 5,235.40 is: 7,224.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.27 : 12,105.75 = 5,235.40 : x
  2. Step 2: Convert to fraction form
    8,772.27/12,105.75 = 5,235.40/x
  3. Step 3: Cross multiply
    8,772.27x = 12,105.75 × 5,235.40
  4. Step 4: Simplify right side
    8,772.27x = 63,378,443.55
  5. Step 5: Solve for x
    x = 63,378,443.55/8,772.27
  6. Step 6: Final answer
    x = 7,224.86

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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.