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Finding the Fourth Proportional to 8,914.53, 12,358.34 and 8,440.50

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Solution

The fourth proportional to 8,914.53, 12,358.34 and 8,440.50 is: 11,701.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,914.53 : 12,358.34 = 8,440.50 : x
  2. Step 2: Convert to fraction form
    8,914.53/12,358.34 = 8,440.50/x
  3. Step 3: Cross multiply
    8,914.53x = 12,358.34 × 8,440.50
  4. Step 4: Simplify right side
    8,914.53x = 104,310,526.57
  5. Step 5: Solve for x
    x = 104,310,526.57/8,914.53
  6. Step 6: Final answer
    x = 11,701.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.