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Finding the Fourth Proportional to 8,984.20, 12,394.82 and 8,970.37

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Solution

The fourth proportional to 8,984.20, 12,394.82 and 8,970.37 is: 12,375.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.20 : 12,394.82 = 8,970.37 : x
  2. Step 2: Convert to fraction form
    8,984.20/12,394.82 = 8,970.37/x
  3. Step 3: Cross multiply
    8,984.20x = 12,394.82 × 8,970.37
  4. Step 4: Simplify right side
    8,984.20x = 111,186,121.48
  5. Step 5: Solve for x
    x = 111,186,121.48/8,984.20
  6. Step 6: Final answer
    x = 12,375.74

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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.