Home / 8,320.26-12,456.39-7,736.40

Finding the Fourth Proportional to 8,320.26, 12,456.39 and 7,736.40

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Solution

The fourth proportional to 8,320.26, 12,456.39 and 7,736.40 is: 11,582.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.26 : 12,456.39 = 7,736.40 : x
  2. Step 2: Convert to fraction form
    8,320.26/12,456.39 = 7,736.40/x
  3. Step 3: Cross multiply
    8,320.26x = 12,456.39 × 7,736.40
  4. Step 4: Simplify right side
    8,320.26x = 96,367,615.60
  5. Step 5: Solve for x
    x = 96,367,615.60/8,320.26
  6. Step 6: Final answer
    x = 11,582.28

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1.5x scale

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.