Home / 2,529.80-3,792.38-2,142.30

Finding the Fourth Proportional to 2,529.80, 3,792.38 and 2,142.30

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Solution

The fourth proportional to 2,529.80, 3,792.38 and 2,142.30 is: 3,211.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,529.80 : 3,792.38 = 2,142.30 : x
  2. Step 2: Convert to fraction form
    2,529.80/3,792.38 = 2,142.30/x
  3. Step 3: Cross multiply
    2,529.80x = 3,792.38 × 2,142.30
  4. Step 4: Simplify right side
    2,529.80x = 8,124,415.67
  5. Step 5: Solve for x
    x = 8,124,415.67/2,529.80
  6. Step 6: Final answer
    x = 3,211.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.