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Finding the Fourth Proportional to 8,737.80, 13,106.70 and 8,622.60

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Solution

The fourth proportional to 8,737.80, 13,106.70 and 8,622.60 is: 12,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,737.80 : 13,106.70 = 8,622.60 : x
  2. Step 2: Convert to fraction form
    8,737.80/13,106.70 = 8,622.60/x
  3. Step 3: Cross multiply
    8,737.80x = 13,106.70 × 8,622.60
  4. Step 4: Simplify right side
    8,737.80x = 113,013,831.42
  5. Step 5: Solve for x
    x = 113,013,831.42/8,737.80
  6. Step 6: Final answer
    x = 12,933.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.