Home / 8,656.51-11,946.83-5,120.86

Finding the Fourth Proportional to 8,656.51, 11,946.83 and 5,120.86

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Solution

The fourth proportional to 8,656.51, 11,946.83 and 5,120.86 is: 7,067.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.51 : 11,946.83 = 5,120.86 : x
  2. Step 2: Convert to fraction form
    8,656.51/11,946.83 = 5,120.86/x
  3. Step 3: Cross multiply
    8,656.51x = 11,946.83 × 5,120.86
  4. Step 4: Simplify right side
    8,656.51x = 61,178,043.87
  5. Step 5: Solve for x
    x = 61,178,043.87/8,656.51
  6. Step 6: Final answer
    x = 7,067.29

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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.