Home / 3,490.79-4,816.98-1,998.45

Finding the Fourth Proportional to 3,490.79, 4,816.98 and 1,998.45

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Solution

The fourth proportional to 3,490.79, 4,816.98 and 1,998.45 is: 2,757.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.79 : 4,816.98 = 1,998.45 : x
  2. Step 2: Convert to fraction form
    3,490.79/4,816.98 = 1,998.45/x
  3. Step 3: Cross multiply
    3,490.79x = 4,816.98 × 1,998.45
  4. Step 4: Simplify right side
    3,490.79x = 9,626,493.68
  5. Step 5: Solve for x
    x = 9,626,493.68/3,490.79
  6. Step 6: Final answer
    x = 2,757.69

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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.