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Finding the Fourth Proportional to 8,905.39, 12,284.08 and 5,880.54

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Solution

The fourth proportional to 8,905.39, 12,284.08 and 5,880.54 is: 8,111.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.39 : 12,284.08 = 5,880.54 : x
  2. Step 2: Convert to fraction form
    8,905.39/12,284.08 = 5,880.54/x
  3. Step 3: Cross multiply
    8,905.39x = 12,284.08 × 5,880.54
  4. Step 4: Simplify right side
    8,905.39x = 72,237,023.80
  5. Step 5: Solve for x
    x = 72,237,023.80/8,905.39
  6. Step 6: Final answer
    x = 8,111.61

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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.