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Finding the Fourth Proportional to 8,145.65, 11,239.52 and 4,788.61

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Solution

The fourth proportional to 8,145.65, 11,239.52 and 4,788.61 is: 6,607.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.65 : 11,239.52 = 4,788.61 : x
  2. Step 2: Convert to fraction form
    8,145.65/11,239.52 = 4,788.61/x
  3. Step 3: Cross multiply
    8,145.65x = 11,239.52 × 4,788.61
  4. Step 4: Simplify right side
    8,145.65x = 53,821,677.87
  5. Step 5: Solve for x
    x = 53,821,677.87/8,145.65
  6. Step 6: Final answer
    x = 6,607.41

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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.