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Finding the Fourth Proportional to 6,287.86, 8,677.65 and 3,635.92

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Solution

The fourth proportional to 6,287.86, 8,677.65 and 3,635.92 is: 5,017.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.86 : 8,677.65 = 3,635.92 : x
  2. Step 2: Convert to fraction form
    6,287.86/8,677.65 = 3,635.92/x
  3. Step 3: Cross multiply
    6,287.86x = 8,677.65 × 3,635.92
  4. Step 4: Simplify right side
    6,287.86x = 31,551,241.19
  5. Step 5: Solve for x
    x = 31,551,241.19/6,287.86
  6. Step 6: Final answer
    x = 5,017.80

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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.