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Finding the Fourth Proportional to 5,392.78, 7,433.58 and 4,940.80

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Solution

The fourth proportional to 5,392.78, 7,433.58 and 4,940.80 is: 6,810.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,392.78 : 7,433.58 = 4,940.80 : x
  2. Step 2: Convert to fraction form
    5,392.78/7,433.58 = 4,940.80/x
  3. Step 3: Cross multiply
    5,392.78x = 7,433.58 × 4,940.80
  4. Step 4: Simplify right side
    5,392.78x = 36,727,832.06
  5. Step 5: Solve for x
    x = 36,727,832.06/5,392.78
  6. Step 6: Final answer
    x = 6,810.56

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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.