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Finding the Fourth Proportional to 3,503.90, 5,256.06 and 1,423.86

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Solution

The fourth proportional to 3,503.90, 5,256.06 and 1,423.86 is: 2,135.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,503.90 : 5,256.06 = 1,423.86 : x
  2. Step 2: Convert to fraction form
    3,503.90/5,256.06 = 1,423.86/x
  3. Step 3: Cross multiply
    3,503.90x = 5,256.06 × 1,423.86
  4. Step 4: Simplify right side
    3,503.90x = 7,483,893.59
  5. Step 5: Solve for x
    x = 7,483,893.59/3,503.90
  6. Step 6: Final answer
    x = 2,135.88

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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.