Home / 8,138.64-11,233.62-4,781.55

Finding the Fourth Proportional to 8,138.64, 11,233.62 and 4,781.55

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Solution

The fourth proportional to 8,138.64, 11,233.62 and 4,781.55 is: 6,599.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.64 : 11,233.62 = 4,781.55 : x
  2. Step 2: Convert to fraction form
    8,138.64/11,233.62 = 4,781.55/x
  3. Step 3: Cross multiply
    8,138.64x = 11,233.62 × 4,781.55
  4. Step 4: Simplify right side
    8,138.64x = 53,714,115.71
  5. Step 5: Solve for x
    x = 53,714,115.71/8,138.64
  6. Step 6: Final answer
    x = 6,599.89

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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.