Home / 3,311.45-4,568.49-1,985.28

Finding the Fourth Proportional to 3,311.45, 4,568.49 and 1,985.28

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Solution

The fourth proportional to 3,311.45, 4,568.49 and 1,985.28 is: 2,738.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.45 : 4,568.49 = 1,985.28 : x
  2. Step 2: Convert to fraction form
    3,311.45/4,568.49 = 1,985.28/x
  3. Step 3: Cross multiply
    3,311.45x = 4,568.49 × 1,985.28
  4. Step 4: Simplify right side
    3,311.45x = 9,069,731.83
  5. Step 5: Solve for x
    x = 9,069,731.83/3,311.45
  6. Step 6: Final answer
    x = 2,738.90

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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.