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Finding the Fourth Proportional to 8,967.94, 12,350.05 and 8,938.74

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Solution

The fourth proportional to 8,967.94, 12,350.05 and 8,938.74 is: 12,309.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,967.94 : 12,350.05 = 8,938.74 : x
  2. Step 2: Convert to fraction form
    8,967.94/12,350.05 = 8,938.74/x
  3. Step 3: Cross multiply
    8,967.94x = 12,350.05 × 8,938.74
  4. Step 4: Simplify right side
    8,967.94x = 110,393,885.94
  5. Step 5: Solve for x
    x = 110,393,885.94/8,967.94
  6. Step 6: Final answer
    x = 12,309.84

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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.