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Finding the Fourth Proportional to 8,317.40, 12,476.10 and 3,943.40

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Solution

The fourth proportional to 8,317.40, 12,476.10 and 3,943.40 is: 5,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,317.40 : 12,476.10 = 3,943.40 : x
  2. Step 2: Convert to fraction form
    8,317.40/12,476.10 = 3,943.40/x
  3. Step 3: Cross multiply
    8,317.40x = 12,476.10 × 3,943.40
  4. Step 4: Simplify right side
    8,317.40x = 49,198,252.74
  5. Step 5: Solve for x
    x = 49,198,252.74/8,317.40
  6. Step 6: Final answer
    x = 5,915.10

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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.