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Finding the Fourth Proportional to 8,531.40, 12,797.10 and 3,923.40

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Solution

The fourth proportional to 8,531.40, 12,797.10 and 3,923.40 is: 5,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.40 : 12,797.10 = 3,923.40 : x
  2. Step 2: Convert to fraction form
    8,531.40/12,797.10 = 3,923.40/x
  3. Step 3: Cross multiply
    8,531.40x = 12,797.10 × 3,923.40
  4. Step 4: Simplify right side
    8,531.40x = 50,208,142.14
  5. Step 5: Solve for x
    x = 50,208,142.14/8,531.40
  6. Step 6: Final answer
    x = 5,885.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.