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Finding the Fourth Proportional to 6,239.58, 9,360.72 and 1,857.39

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Solution

The fourth proportional to 6,239.58, 9,360.72 and 1,857.39 is: 2,786.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,239.58 : 9,360.72 = 1,857.39 : x
  2. Step 2: Convert to fraction form
    6,239.58/9,360.72 = 1,857.39/x
  3. Step 3: Cross multiply
    6,239.58x = 9,360.72 × 1,857.39
  4. Step 4: Simplify right side
    6,239.58x = 17,386,507.72
  5. Step 5: Solve for x
    x = 17,386,507.72/6,239.58
  6. Step 6: Final answer
    x = 2,786.49

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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.