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Finding the Fourth Proportional to 6,487.30, 8,947.69 and 4,808.78

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Solution

The fourth proportional to 6,487.30, 8,947.69 and 4,808.78 is: 6,632.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.30 : 8,947.69 = 4,808.78 : x
  2. Step 2: Convert to fraction form
    6,487.30/8,947.69 = 4,808.78/x
  3. Step 3: Cross multiply
    6,487.30x = 8,947.69 × 4,808.78
  4. Step 4: Simplify right side
    6,487.30x = 43,027,472.72
  5. Step 5: Solve for x
    x = 43,027,472.72/6,487.30
  6. Step 6: Final answer
    x = 6,632.57

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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.