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Finding the Fourth Proportional to 8,856.63, 12,228.03 and 6,836.40

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Solution

The fourth proportional to 8,856.63, 12,228.03 and 6,836.40 is: 9,438.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856.63 : 12,228.03 = 6,836.40 : x
  2. Step 2: Convert to fraction form
    8,856.63/12,228.03 = 6,836.40/x
  3. Step 3: Cross multiply
    8,856.63x = 12,228.03 × 6,836.40
  4. Step 4: Simplify right side
    8,856.63x = 83,595,704.29
  5. Step 5: Solve for x
    x = 83,595,704.29/8,856.63
  6. Step 6: Final answer
    x = 9,438.77

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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.