Home / 3,721.79-5,136.73-2,782.29

Finding the Fourth Proportional to 3,721.79, 5,136.73 and 2,782.29

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Solution

The fourth proportional to 3,721.79, 5,136.73 and 2,782.29 is: 3,840.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.79 : 5,136.73 = 2,782.29 : x
  2. Step 2: Convert to fraction form
    3,721.79/5,136.73 = 2,782.29/x
  3. Step 3: Cross multiply
    3,721.79x = 5,136.73 × 2,782.29
  4. Step 4: Simplify right side
    3,721.79x = 14,291,872.51
  5. Step 5: Solve for x
    x = 14,291,872.51/3,721.79
  6. Step 6: Final answer
    x = 3,840.05

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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.