Home / 3,409.90-5,111.85-1,654.02

Finding the Fourth Proportional to 3,409.90, 5,111.85 and 1,654.02

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Solution

The fourth proportional to 3,409.90, 5,111.85 and 1,654.02 is: 2,479.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.90 : 5,111.85 = 1,654.02 : x
  2. Step 2: Convert to fraction form
    3,409.90/5,111.85 = 1,654.02/x
  3. Step 3: Cross multiply
    3,409.90x = 5,111.85 × 1,654.02
  4. Step 4: Simplify right side
    3,409.90x = 8,455,102.14
  5. Step 5: Solve for x
    x = 8,455,102.14/3,409.90
  6. Step 6: Final answer
    x = 2,479.57

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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.