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Finding the Fourth Proportional to 8,903.56, 12,285.04 and 6,778.66

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Solution

The fourth proportional to 8,903.56, 12,285.04 and 6,778.66 is: 9,353.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.56 : 12,285.04 = 6,778.66 : x
  2. Step 2: Convert to fraction form
    8,903.56/12,285.04 = 6,778.66/x
  3. Step 3: Cross multiply
    8,903.56x = 12,285.04 × 6,778.66
  4. Step 4: Simplify right side
    8,903.56x = 83,276,109.25
  5. Step 5: Solve for x
    x = 83,276,109.25/8,903.56
  6. Step 6: Final answer
    x = 9,353.12

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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.