Home / 7,989.16-11,010.66-7,072.60

Finding the Fourth Proportional to 7,989.16, 11,010.66 and 7,072.60

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Solution

The fourth proportional to 7,989.16, 11,010.66 and 7,072.60 is: 9,747.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.16 : 11,010.66 = 7,072.60 : x
  2. Step 2: Convert to fraction form
    7,989.16/11,010.66 = 7,072.60/x
  3. Step 3: Cross multiply
    7,989.16x = 11,010.66 × 7,072.60
  4. Step 4: Simplify right side
    7,989.16x = 77,873,993.92
  5. Step 5: Solve for x
    x = 77,873,993.92/7,989.16
  6. Step 6: Final answer
    x = 9,747.46

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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.