Home / 3,561.94-4,915.46-1,990.03

Finding the Fourth Proportional to 3,561.94, 4,915.46 and 1,990.03

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Solution

The fourth proportional to 3,561.94, 4,915.46 and 1,990.03 is: 2,746.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.94 : 4,915.46 = 1,990.03 : x
  2. Step 2: Convert to fraction form
    3,561.94/4,915.46 = 1,990.03/x
  3. Step 3: Cross multiply
    3,561.94x = 4,915.46 × 1,990.03
  4. Step 4: Simplify right side
    3,561.94x = 9,781,909.21
  5. Step 5: Solve for x
    x = 9,781,909.21/3,561.94
  6. Step 6: Final answer
    x = 2,746.23

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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.