Home / 7,725.36-11,531.50-6,636.72

Finding the Fourth Proportional to 7,725.36, 11,531.50 and 6,636.72

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Solution

The fourth proportional to 7,725.36, 11,531.50 and 6,636.72 is: 9,906.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.36 : 11,531.50 = 6,636.72 : x
  2. Step 2: Convert to fraction form
    7,725.36/11,531.50 = 6,636.72/x
  3. Step 3: Cross multiply
    7,725.36x = 11,531.50 × 6,636.72
  4. Step 4: Simplify right side
    7,725.36x = 76,531,320.09
  5. Step 5: Solve for x
    x = 76,531,320.09/7,725.36
  6. Step 6: Final answer
    x = 9,906.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.