Home / 3,615.78-5,419.59-1,641.06

Finding the Fourth Proportional to 3,615.78, 5,419.59 and 1,641.06

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Solution

The fourth proportional to 3,615.78, 5,419.59 and 1,641.06 is: 2,459.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.78 : 5,419.59 = 1,641.06 : x
  2. Step 2: Convert to fraction form
    3,615.78/5,419.59 = 1,641.06/x
  3. Step 3: Cross multiply
    3,615.78x = 5,419.59 × 1,641.06
  4. Step 4: Simplify right side
    3,615.78x = 8,893,872.37
  5. Step 5: Solve for x
    x = 8,893,872.37/3,615.78
  6. Step 6: Final answer
    x = 2,459.74

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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.