Home / 3,311.50-4,569.70-1,984.95

Finding the Fourth Proportional to 3,311.50, 4,569.70 and 1,984.95

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Solution

The fourth proportional to 3,311.50, 4,569.70 and 1,984.95 is: 2,739.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.50 : 4,569.70 = 1,984.95 : x
  2. Step 2: Convert to fraction form
    3,311.50/4,569.70 = 1,984.95/x
  3. Step 3: Cross multiply
    3,311.50x = 4,569.70 × 1,984.95
  4. Step 4: Simplify right side
    3,311.50x = 9,070,626.02
  5. Step 5: Solve for x
    x = 9,070,626.02/3,311.50
  6. Step 6: Final answer
    x = 2,739.13

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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.