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Finding the Fourth Proportional to 3,136.88, 4,328.90 and 1,739.90

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Solution

The fourth proportional to 3,136.88, 4,328.90 and 1,739.90 is: 2,401.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.88 : 4,328.90 = 1,739.90 : x
  2. Step 2: Convert to fraction form
    3,136.88/4,328.90 = 1,739.90/x
  3. Step 3: Cross multiply
    3,136.88x = 4,328.90 × 1,739.90
  4. Step 4: Simplify right side
    3,136.88x = 7,531,822.77
  5. Step 5: Solve for x
    x = 7,531,822.77/3,136.88
  6. Step 6: Final answer
    x = 2,401.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.