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Finding the Fourth Proportional to 5,448.80, 8,164.40 and 4,930.40

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Solution

The fourth proportional to 5,448.80, 8,164.40 and 4,930.40 is: 7,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,448.80 : 8,164.40 = 4,930.40 : x
  2. Step 2: Convert to fraction form
    5,448.80/8,164.40 = 4,930.40/x
  3. Step 3: Cross multiply
    5,448.80x = 8,164.40 × 4,930.40
  4. Step 4: Simplify right side
    5,448.80x = 40,253,757.76
  5. Step 5: Solve for x
    x = 40,253,757.76/5,448.80
  6. Step 6: Final answer
    x = 7,387.64

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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.