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Finding the Fourth Proportional to 3,404.77, 5,108.63 and 1,430.91

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Solution

The fourth proportional to 3,404.77, 5,108.63 and 1,430.91 is: 2,146.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.77 : 5,108.63 = 1,430.91 : x
  2. Step 2: Convert to fraction form
    3,404.77/5,108.63 = 1,430.91/x
  3. Step 3: Cross multiply
    3,404.77x = 5,108.63 × 1,430.91
  4. Step 4: Simplify right side
    3,404.77x = 7,309,982.60
  5. Step 5: Solve for x
    x = 7,309,982.60/3,404.77
  6. Step 6: Final answer
    x = 2,146.98

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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.