Home / 3,504.59-5,255.40-1,311.79

Finding the Fourth Proportional to 3,504.59, 5,255.40 and 1,311.79

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Solution

The fourth proportional to 3,504.59, 5,255.40 and 1,311.79 is: 1,967.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,504.59 : 5,255.40 = 1,311.79 : x
  2. Step 2: Convert to fraction form
    3,504.59/5,255.40 = 1,311.79/x
  3. Step 3: Cross multiply
    3,504.59x = 5,255.40 × 1,311.79
  4. Step 4: Simplify right side
    3,504.59x = 6,893,981.17
  5. Step 5: Solve for x
    x = 6,893,981.17/3,504.59
  6. Step 6: Final answer
    x = 1,967.13

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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.