Home / 2,669.80-3,684.21-1,490.85

Finding the Fourth Proportional to 2,669.80, 3,684.21 and 1,490.85

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Solution

The fourth proportional to 2,669.80, 3,684.21 and 1,490.85 is: 2,057.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.80 : 3,684.21 = 1,490.85 : x
  2. Step 2: Convert to fraction form
    2,669.80/3,684.21 = 1,490.85/x
  3. Step 3: Cross multiply
    2,669.80x = 3,684.21 × 1,490.85
  4. Step 4: Simplify right side
    2,669.80x = 5,492,604.48
  5. Step 5: Solve for x
    x = 5,492,604.48/2,669.80
  6. Step 6: Final answer
    x = 2,057.31

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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.