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Finding the Fourth Proportional to 5,188, 7,159.44 and 3,862.84

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Solution

The fourth proportional to 5,188, 7,159.44 and 3,862.84 is: 5,330.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188 : 7,159.44 = 3,862.84 : x
  2. Step 2: Convert to fraction form
    5,188/7,159.44 = 3,862.84/x
  3. Step 3: Cross multiply
    5,188x = 7,159.44 × 3,862.84
  4. Step 4: Simplify right side
    5,188x = 27,655,771.21
  5. Step 5: Solve for x
    x = 27,655,771.21/5,188
  6. Step 6: Final answer
    x = 5,330.72

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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.