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Finding the Fourth Proportional to 8,365.86, 12,550.88 and 5,905.48

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Solution

The fourth proportional to 8,365.86, 12,550.88 and 5,905.48 is: 8,859.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,365.86 : 12,550.88 = 5,905.48 : x
  2. Step 2: Convert to fraction form
    8,365.86/12,550.88 = 5,905.48/x
  3. Step 3: Cross multiply
    8,365.86x = 12,550.88 × 5,905.48
  4. Step 4: Simplify right side
    8,365.86x = 74,118,970.82
  5. Step 5: Solve for x
    x = 74,118,970.82/8,365.86
  6. Step 6: Final answer
    x = 8,859.70

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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.