Home / 3,311.01-4,959.63-1,990.58

Finding the Fourth Proportional to 3,311.01, 4,959.63 and 1,990.58

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Solution

The fourth proportional to 3,311.01, 4,959.63 and 1,990.58 is: 2,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.01 : 4,959.63 = 1,990.58 : x
  2. Step 2: Convert to fraction form
    3,311.01/4,959.63 = 1,990.58/x
  3. Step 3: Cross multiply
    3,311.01x = 4,959.63 × 1,990.58
  4. Step 4: Simplify right side
    3,311.01x = 9,872,515.49
  5. Step 5: Solve for x
    x = 9,872,515.49/3,311.01
  6. Step 6: Final answer
    x = 2,981.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.