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Finding the Fourth Proportional to 3,239.64, 4,858.54 and 899.08

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Solution

The fourth proportional to 3,239.64, 4,858.54 and 899.08 is: 1,348.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.64 : 4,858.54 = 899.08 : x
  2. Step 2: Convert to fraction form
    3,239.64/4,858.54 = 899.08/x
  3. Step 3: Cross multiply
    3,239.64x = 4,858.54 × 899.08
  4. Step 4: Simplify right side
    3,239.64x = 4,368,216.14
  5. Step 5: Solve for x
    x = 4,368,216.14/3,239.64
  6. Step 6: Final answer
    x = 1,348.36

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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.