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Finding the Fourth Proportional to 8,756.61, 13,193.41 and 7,924.79

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Solution

The fourth proportional to 8,756.61, 13,193.41 and 7,924.79 is: 11,940.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.61 : 13,193.41 = 7,924.79 : x
  2. Step 2: Convert to fraction form
    8,756.61/13,193.41 = 7,924.79/x
  3. Step 3: Cross multiply
    8,756.61x = 13,193.41 × 7,924.79
  4. Step 4: Simplify right side
    8,756.61x = 104,554,935.16
  5. Step 5: Solve for x
    x = 104,554,935.16/8,756.61
  6. Step 6: Final answer
    x = 11,940.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.