Home / 3,721.88-5,136-2,543.24

Finding the Fourth Proportional to 3,721.88, 5,136 and 2,543.24

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Solution

The fourth proportional to 3,721.88, 5,136 and 2,543.24 is: 3,509.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.88 : 5,136 = 2,543.24 : x
  2. Step 2: Convert to fraction form
    3,721.88/5,136 = 2,543.24/x
  3. Step 3: Cross multiply
    3,721.88x = 5,136 × 2,543.24
  4. Step 4: Simplify right side
    3,721.88x = 13,062,080.64
  5. Step 5: Solve for x
    x = 13,062,080.64/3,721.88
  6. Step 6: Final answer
    x = 3,509.54

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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.