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Finding the Fourth Proportional to 8,474.91, 12,715.01 and 3,798.92

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Solution

The fourth proportional to 8,474.91, 12,715.01 and 3,798.92 is: 5,699.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.91 : 12,715.01 = 3,798.92 : x
  2. Step 2: Convert to fraction form
    8,474.91/12,715.01 = 3,798.92/x
  3. Step 3: Cross multiply
    8,474.91x = 12,715.01 × 3,798.92
  4. Step 4: Simplify right side
    8,474.91x = 48,303,305.79
  5. Step 5: Solve for x
    x = 48,303,305.79/8,474.91
  6. Step 6: Final answer
    x = 5,699.57

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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.