Home / 8,138.16-11,228.67-4,781.12

Finding the Fourth Proportional to 8,138.16, 11,228.67 and 4,781.12

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Solution

The fourth proportional to 8,138.16, 11,228.67 and 4,781.12 is: 6,596.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.16 : 11,228.67 = 4,781.12 : x
  2. Step 2: Convert to fraction form
    8,138.16/11,228.67 = 4,781.12/x
  3. Step 3: Cross multiply
    8,138.16x = 11,228.67 × 4,781.12
  4. Step 4: Simplify right side
    8,138.16x = 53,685,562.57
  5. Step 5: Solve for x
    x = 53,685,562.57/8,138.16
  6. Step 6: Final answer
    x = 6,596.77

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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.