Home / 3,721.51-5,136.16-2,149.30

Finding the Fourth Proportional to 3,721.51, 5,136.16 and 2,149.30

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Solution

The fourth proportional to 3,721.51, 5,136.16 and 2,149.30 is: 2,966.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.51 : 5,136.16 = 2,149.30 : x
  2. Step 2: Convert to fraction form
    3,721.51/5,136.16 = 2,149.30/x
  3. Step 3: Cross multiply
    3,721.51x = 5,136.16 × 2,149.30
  4. Step 4: Simplify right side
    3,721.51x = 11,039,153.76
  5. Step 5: Solve for x
    x = 11,039,153.76/3,721.51
  6. Step 6: Final answer
    x = 2,966.31

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1.5x scale

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.