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Finding the Fourth Proportional to 6,296.80, 9,434.40 and 3,985.60

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Solution

The fourth proportional to 6,296.80, 9,434.40 and 3,985.60 is: 5,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,296.80 : 9,434.40 = 3,985.60 : x
  2. Step 2: Convert to fraction form
    6,296.80/9,434.40 = 3,985.60/x
  3. Step 3: Cross multiply
    6,296.80x = 9,434.40 × 3,985.60
  4. Step 4: Simplify right side
    6,296.80x = 37,601,744.64
  5. Step 5: Solve for x
    x = 37,601,744.64/6,296.80
  6. Step 6: Final answer
    x = 5,971.56

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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.