Home / 8,631.51-11,918.39-7,968.12

Finding the Fourth Proportional to 8,631.51, 11,918.39 and 7,968.12

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Solution

The fourth proportional to 8,631.51, 11,918.39 and 7,968.12 is: 11,002.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.51 : 11,918.39 = 7,968.12 : x
  2. Step 2: Convert to fraction form
    8,631.51/11,918.39 = 7,968.12/x
  3. Step 3: Cross multiply
    8,631.51x = 11,918.39 × 7,968.12
  4. Step 4: Simplify right side
    8,631.51x = 94,967,121.89
  5. Step 5: Solve for x
    x = 94,967,121.89/8,631.51
  6. Step 6: Final answer
    x = 11,002.38

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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.