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Finding the Fourth Proportional to 9,874.90, 14,815.80 and 6,172.78

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Solution

The fourth proportional to 9,874.90, 14,815.80 and 6,172.78 is: 9,261.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,874.90 : 14,815.80 = 6,172.78 : x
  2. Step 2: Convert to fraction form
    9,874.90/14,815.80 = 6,172.78/x
  3. Step 3: Cross multiply
    9,874.90x = 14,815.80 × 6,172.78
  4. Step 4: Simplify right side
    9,874.90x = 91,454,673.92
  5. Step 5: Solve for x
    x = 91,454,673.92/9,874.90
  6. Step 6: Final answer
    x = 9,261.33

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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.