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Finding the Fourth Proportional to 8,622.34, 12,934.78 and 4,240.10

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Solution

The fourth proportional to 8,622.34, 12,934.78 and 4,240.10 is: 6,360.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.34 : 12,934.78 = 4,240.10 : x
  2. Step 2: Convert to fraction form
    8,622.34/12,934.78 = 4,240.10/x
  3. Step 3: Cross multiply
    8,622.34x = 12,934.78 × 4,240.10
  4. Step 4: Simplify right side
    8,622.34x = 54,844,760.68
  5. Step 5: Solve for x
    x = 54,844,760.68/8,622.34
  6. Step 6: Final answer
    x = 6,360.77

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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.