Home / 8,145.78-11,239.70-4,788.73

Finding the Fourth Proportional to 8,145.78, 11,239.70 and 4,788.73

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Solution

The fourth proportional to 8,145.78, 11,239.70 and 4,788.73 is: 6,607.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.78 : 11,239.70 = 4,788.73 : x
  2. Step 2: Convert to fraction form
    8,145.78/11,239.70 = 4,788.73/x
  3. Step 3: Cross multiply
    8,145.78x = 11,239.70 × 4,788.73
  4. Step 4: Simplify right side
    8,145.78x = 53,823,878.69
  5. Step 5: Solve for x
    x = 53,823,878.69/8,145.78
  6. Step 6: Final answer
    x = 6,607.58

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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.