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Finding the Fourth Proportional to 5,605.60, 7,739.04 and 3,619.12

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Solution

The fourth proportional to 5,605.60, 7,739.04 and 3,619.12 is: 4,996.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,605.60 : 7,739.04 = 3,619.12 : x
  2. Step 2: Convert to fraction form
    5,605.60/7,739.04 = 3,619.12/x
  3. Step 3: Cross multiply
    5,605.60x = 7,739.04 × 3,619.12
  4. Step 4: Simplify right side
    5,605.60x = 28,008,514.44
  5. Step 5: Solve for x
    x = 28,008,514.44/5,605.60
  6. Step 6: Final answer
    x = 4,996.52

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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.