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Finding the Fourth Proportional to 9,369.84, 12,941.28 and 6,220.56

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Solution

The fourth proportional to 9,369.84, 12,941.28 and 6,220.56 is: 8,591.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,369.84 : 12,941.28 = 6,220.56 : x
  2. Step 2: Convert to fraction form
    9,369.84/12,941.28 = 6,220.56/x
  3. Step 3: Cross multiply
    9,369.84x = 12,941.28 × 6,220.56
  4. Step 4: Simplify right side
    9,369.84x = 80,502,008.72
  5. Step 5: Solve for x
    x = 80,502,008.72/9,369.84
  6. Step 6: Final answer
    x = 8,591.61

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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.