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Finding the Fourth Proportional to 5,424.60, 7,843.80 and 5,424.60

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Solution

The fourth proportional to 5,424.60, 7,843.80 and 5,424.60 is: 7,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.60 : 7,843.80 = 5,424.60 : x
  2. Step 2: Convert to fraction form
    5,424.60/7,843.80 = 5,424.60/x
  3. Step 3: Cross multiply
    5,424.60x = 7,843.80 × 5,424.60
  4. Step 4: Simplify right side
    5,424.60x = 42,549,477.48
  5. Step 5: Solve for x
    x = 42,549,477.48/5,424.60
  6. Step 6: Final answer
    x = 7,843.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.