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Finding the Fourth Proportional to 3,897.68, 5,845.64 and 1,124.34

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Solution

The fourth proportional to 3,897.68, 5,845.64 and 1,124.34 is: 1,686.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897.68 : 5,845.64 = 1,124.34 : x
  2. Step 2: Convert to fraction form
    3,897.68/5,845.64 = 1,124.34/x
  3. Step 3: Cross multiply
    3,897.68x = 5,845.64 × 1,124.34
  4. Step 4: Simplify right side
    3,897.68x = 6,572,486.88
  5. Step 5: Solve for x
    x = 6,572,486.88/3,897.68
  6. Step 6: Final answer
    x = 1,686.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.