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Finding the Fourth Proportional to 5,743.68, 7,927.68 and 3,860.56

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Solution

The fourth proportional to 5,743.68, 7,927.68 and 3,860.56 is: 5,328.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,743.68 : 7,927.68 = 3,860.56 : x
  2. Step 2: Convert to fraction form
    5,743.68/7,927.68 = 3,860.56/x
  3. Step 3: Cross multiply
    5,743.68x = 7,927.68 × 3,860.56
  4. Step 4: Simplify right side
    5,743.68x = 30,605,284.30
  5. Step 5: Solve for x
    x = 30,605,284.30/5,743.68
  6. Step 6: Final answer
    x = 5,328.51

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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.