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Finding the Fourth Proportional to 8,903.61, 12,287.43 and 5,367.96

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Solution

The fourth proportional to 8,903.61, 12,287.43 and 5,367.96 is: 7,408.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.61 : 12,287.43 = 5,367.96 : x
  2. Step 2: Convert to fraction form
    8,903.61/12,287.43 = 5,367.96/x
  3. Step 3: Cross multiply
    8,903.61x = 12,287.43 × 5,367.96
  4. Step 4: Simplify right side
    8,903.61x = 65,958,432.74
  5. Step 5: Solve for x
    x = 65,958,432.74/8,903.61
  6. Step 6: Final answer
    x = 7,408.06

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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.