Home / 8,918.72-12,306.58-4,940.08

Finding the Fourth Proportional to 8,918.72, 12,306.58 and 4,940.08

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Solution

The fourth proportional to 8,918.72, 12,306.58 and 4,940.08 is: 6,816.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.72 : 12,306.58 = 4,940.08 : x
  2. Step 2: Convert to fraction form
    8,918.72/12,306.58 = 4,940.08/x
  3. Step 3: Cross multiply
    8,918.72x = 12,306.58 × 4,940.08
  4. Step 4: Simplify right side
    8,918.72x = 60,795,489.73
  5. Step 5: Solve for x
    x = 60,795,489.73/8,918.72
  6. Step 6: Final answer
    x = 6,816.62

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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.