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Finding the Fourth Proportional to 8,975.18, 12,392.42 and 5,443.18

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Solution

The fourth proportional to 8,975.18, 12,392.42 and 5,443.18 is: 7,515.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.18 : 12,392.42 = 5,443.18 : x
  2. Step 2: Convert to fraction form
    8,975.18/12,392.42 = 5,443.18/x
  3. Step 3: Cross multiply
    8,975.18x = 12,392.42 × 5,443.18
  4. Step 4: Simplify right side
    8,975.18x = 67,454,172.70
  5. Step 5: Solve for x
    x = 67,454,172.70/8,975.18
  6. Step 6: Final answer
    x = 7,515.63

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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.