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Finding the Fourth Proportional to 8,920.37, 12,310.44 and 4,941.39

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Solution

The fourth proportional to 8,920.37, 12,310.44 and 4,941.39 is: 6,819.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.37 : 12,310.44 = 4,941.39 : x
  2. Step 2: Convert to fraction form
    8,920.37/12,310.44 = 4,941.39/x
  3. Step 3: Cross multiply
    8,920.37x = 12,310.44 × 4,941.39
  4. Step 4: Simplify right side
    8,920.37x = 60,830,685.11
  5. Step 5: Solve for x
    x = 60,830,685.11/8,920.37
  6. Step 6: Final answer
    x = 6,819.30

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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.