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Finding the Fourth Proportional to 8,983.45, 12,398.97 and 6,156.55

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Solution

The fourth proportional to 8,983.45, 12,398.97 and 6,156.55 is: 8,497.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,983.45 : 12,398.97 = 6,156.55 : x
  2. Step 2: Convert to fraction form
    8,983.45/12,398.97 = 6,156.55/x
  3. Step 3: Cross multiply
    8,983.45x = 12,398.97 × 6,156.55
  4. Step 4: Simplify right side
    8,983.45x = 76,334,878.75
  5. Step 5: Solve for x
    x = 76,334,878.75/8,983.45
  6. Step 6: Final answer
    x = 8,497.28

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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.