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Finding the Fourth Proportional to 7,931.36, 10,923.09 and 7,759.17

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Solution

The fourth proportional to 7,931.36, 10,923.09 and 7,759.17 is: 10,685.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.36 : 10,923.09 = 7,759.17 : x
  2. Step 2: Convert to fraction form
    7,931.36/10,923.09 = 7,759.17/x
  3. Step 3: Cross multiply
    7,931.36x = 10,923.09 × 7,759.17
  4. Step 4: Simplify right side
    7,931.36x = 84,754,083.14
  5. Step 5: Solve for x
    x = 84,754,083.14/7,931.36
  6. Step 6: Final answer
    x = 10,685.94

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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.