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Finding the Fourth Proportional to 8,271, 11,410.80 and 5,439.86

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Solution

The fourth proportional to 8,271, 11,410.80 and 5,439.86 is: 7,504.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271 : 11,410.80 = 5,439.86 : x
  2. Step 2: Convert to fraction form
    8,271/11,410.80 = 5,439.86/x
  3. Step 3: Cross multiply
    8,271x = 11,410.80 × 5,439.86
  4. Step 4: Simplify right side
    8,271x = 62,073,154.49
  5. Step 5: Solve for x
    x = 62,073,154.49/8,271
  6. Step 6: Final answer
    x = 7,504.92

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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.