Home / 8,782.68-13,175.86-2,939.76

Finding the Fourth Proportional to 8,782.68, 13,175.86 and 2,939.76

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Solution

The fourth proportional to 8,782.68, 13,175.86 and 2,939.76 is: 4,410.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.68 : 13,175.86 = 2,939.76 : x
  2. Step 2: Convert to fraction form
    8,782.68/13,175.86 = 2,939.76/x
  3. Step 3: Cross multiply
    8,782.68x = 13,175.86 × 2,939.76
  4. Step 4: Simplify right side
    8,782.68x = 38,733,866.19
  5. Step 5: Solve for x
    x = 38,733,866.19/8,782.68
  6. Step 6: Final answer
    x = 4,410.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.