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Finding the Fourth Proportional to 4,918.60, 7,369.80 and 4,092.40

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Solution

The fourth proportional to 4,918.60, 7,369.80 and 4,092.40 is: 6,131.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.60 : 7,369.80 = 4,092.40 : x
  2. Step 2: Convert to fraction form
    4,918.60/7,369.80 = 4,092.40/x
  3. Step 3: Cross multiply
    4,918.60x = 7,369.80 × 4,092.40
  4. Step 4: Simplify right side
    4,918.60x = 30,160,169.52
  5. Step 5: Solve for x
    x = 30,160,169.52/4,918.60
  6. Step 6: Final answer
    x = 6,131.86

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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.