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Finding the Fourth Proportional to 3,407.59, 5,109.19 and 1,434.50

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Solution

The fourth proportional to 3,407.59, 5,109.19 and 1,434.50 is: 2,150.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.59 : 5,109.19 = 1,434.50 : x
  2. Step 2: Convert to fraction form
    3,407.59/5,109.19 = 1,434.50/x
  3. Step 3: Cross multiply
    3,407.59x = 5,109.19 × 1,434.50
  4. Step 4: Simplify right side
    3,407.59x = 7,329,133.06
  5. Step 5: Solve for x
    x = 7,329,133.06/3,407.59
  6. Step 6: Final answer
    x = 2,150.83

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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.