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Finding the Fourth Proportional to 5,605.76, 7,734.56 and 3,613.92

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Solution

The fourth proportional to 5,605.76, 7,734.56 and 3,613.92 is: 4,986.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,605.76 : 7,734.56 = 3,613.92 : x
  2. Step 2: Convert to fraction form
    5,605.76/7,734.56 = 3,613.92/x
  3. Step 3: Cross multiply
    5,605.76x = 7,734.56 × 3,613.92
  4. Step 4: Simplify right side
    5,605.76x = 27,952,081.08
  5. Step 5: Solve for x
    x = 27,952,081.08/5,605.76
  6. Step 6: Final answer
    x = 4,986.31

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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.