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Finding the Fourth Proportional to 8,871.48, 12,243.51 and 6,629.46

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Solution

The fourth proportional to 8,871.48, 12,243.51 and 6,629.46 is: 9,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.48 : 12,243.51 = 6,629.46 : x
  2. Step 2: Convert to fraction form
    8,871.48/12,243.51 = 6,629.46/x
  3. Step 3: Cross multiply
    8,871.48x = 12,243.51 × 6,629.46
  4. Step 4: Simplify right side
    8,871.48x = 81,167,873.84
  5. Step 5: Solve for x
    x = 81,167,873.84/8,871.48
  6. Step 6: Final answer
    x = 9,149.30

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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.