Home / 2,529.15-3,490.32-2,108.79

Finding the Fourth Proportional to 2,529.15, 3,490.32 and 2,108.79

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Solution

The fourth proportional to 2,529.15, 3,490.32 and 2,108.79 is: 2,910.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,529.15 : 3,490.32 = 2,108.79 : x
  2. Step 2: Convert to fraction form
    2,529.15/3,490.32 = 2,108.79/x
  3. Step 3: Cross multiply
    2,529.15x = 3,490.32 × 2,108.79
  4. Step 4: Simplify right side
    2,529.15x = 7,360,351.91
  5. Step 5: Solve for x
    x = 7,360,351.91/2,529.15
  6. Step 6: Final answer
    x = 2,910.21

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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.