Home / 8,178.26-11,272.52-5,785.14

Finding the Fourth Proportional to 8,178.26, 11,272.52 and 5,785.14

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Solution

The fourth proportional to 8,178.26, 11,272.52 and 5,785.14 is: 7,973.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.26 : 11,272.52 = 5,785.14 : x
  2. Step 2: Convert to fraction form
    8,178.26/11,272.52 = 5,785.14/x
  3. Step 3: Cross multiply
    8,178.26x = 11,272.52 × 5,785.14
  4. Step 4: Simplify right side
    8,178.26x = 65,213,106.35
  5. Step 5: Solve for x
    x = 65,213,106.35/8,178.26
  6. Step 6: Final answer
    x = 7,973.96

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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.