Home / 3,482.09-4,805.01-1,989.80

Finding the Fourth Proportional to 3,482.09, 4,805.01 and 1,989.80

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Solution

The fourth proportional to 3,482.09, 4,805.01 and 1,989.80 is: 2,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,482.09 : 4,805.01 = 1,989.80 : x
  2. Step 2: Convert to fraction form
    3,482.09/4,805.01 = 1,989.80/x
  3. Step 3: Cross multiply
    3,482.09x = 4,805.01 × 1,989.80
  4. Step 4: Simplify right side
    3,482.09x = 9,561,008.90
  5. Step 5: Solve for x
    x = 9,561,008.90/3,482.09
  6. Step 6: Final answer
    x = 2,745.77

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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.