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Finding the Fourth Proportional to 8,911.01, 12,282.44 and 6,253.81

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Solution

The fourth proportional to 8,911.01, 12,282.44 and 6,253.81 is: 8,619.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.01 : 12,282.44 = 6,253.81 : x
  2. Step 2: Convert to fraction form
    8,911.01/12,282.44 = 6,253.81/x
  3. Step 3: Cross multiply
    8,911.01x = 12,282.44 × 6,253.81
  4. Step 4: Simplify right side
    8,911.01x = 76,811,984.12
  5. Step 5: Solve for x
    x = 76,811,984.12/8,911.01
  6. Step 6: Final answer
    x = 8,619.89

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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.