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Finding the Fourth Proportional to 8,972.94, 12,393.24 and 7,186.62

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Solution

The fourth proportional to 8,972.94, 12,393.24 and 7,186.62 is: 9,926.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.94 : 12,393.24 = 7,186.62 : x
  2. Step 2: Convert to fraction form
    8,972.94/12,393.24 = 7,186.62/x
  3. Step 3: Cross multiply
    8,972.94x = 12,393.24 × 7,186.62
  4. Step 4: Simplify right side
    8,972.94x = 89,065,506.45
  5. Step 5: Solve for x
    x = 89,065,506.45/8,972.94
  6. Step 6: Final answer
    x = 9,926.01

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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.