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Finding the Fourth Proportional to 3,136.57, 4,328.29 and 1,720.01

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Solution

The fourth proportional to 3,136.57, 4,328.29 and 1,720.01 is: 2,373.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.57 : 4,328.29 = 1,720.01 : x
  2. Step 2: Convert to fraction form
    3,136.57/4,328.29 = 1,720.01/x
  3. Step 3: Cross multiply
    3,136.57x = 4,328.29 × 1,720.01
  4. Step 4: Simplify right side
    3,136.57x = 7,444,708.60
  5. Step 5: Solve for x
    x = 7,444,708.60/3,136.57
  6. Step 6: Final answer
    x = 2,373.52

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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.