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Finding the Fourth Proportional to 6,487.18, 8,951.79 and 4,245.50

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Solution

The fourth proportional to 6,487.18, 8,951.79 and 4,245.50 is: 5,858.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.18 : 8,951.79 = 4,245.50 : x
  2. Step 2: Convert to fraction form
    6,487.18/8,951.79 = 4,245.50/x
  3. Step 3: Cross multiply
    6,487.18x = 8,951.79 × 4,245.50
  4. Step 4: Simplify right side
    6,487.18x = 38,004,846.82
  5. Step 5: Solve for x
    x = 38,004,846.82/6,487.18
  6. Step 6: Final answer
    x = 5,858.46

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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.