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Finding the Fourth Proportional to 5,753.54, 7,941.84 and 3,987.47

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Solution

The fourth proportional to 5,753.54, 7,941.84 and 3,987.47 is: 5,504.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,753.54 : 7,941.84 = 3,987.47 : x
  2. Step 2: Convert to fraction form
    5,753.54/7,941.84 = 3,987.47/x
  3. Step 3: Cross multiply
    5,753.54x = 7,941.84 × 3,987.47
  4. Step 4: Simplify right side
    5,753.54x = 31,667,848.74
  5. Step 5: Solve for x
    x = 31,667,848.74/5,753.54
  6. Step 6: Final answer
    x = 5,504.06

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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.