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Finding the Fourth Proportional to 8,220.34, 12,328.69 and 4,934.37

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Solution

The fourth proportional to 8,220.34, 12,328.69 and 4,934.37 is: 7,400.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.34 : 12,328.69 = 4,934.37 : x
  2. Step 2: Convert to fraction form
    8,220.34/12,328.69 = 4,934.37/x
  3. Step 3: Cross multiply
    8,220.34x = 12,328.69 × 4,934.37
  4. Step 4: Simplify right side
    8,220.34x = 60,834,318.08
  5. Step 5: Solve for x
    x = 60,834,318.08/8,220.34
  6. Step 6: Final answer
    x = 7,400.46

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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.