Home / 3,489.95-4,817.39-2,311.40

Finding the Fourth Proportional to 3,489.95, 4,817.39 and 2,311.40

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Solution

The fourth proportional to 3,489.95, 4,817.39 and 2,311.40 is: 3,190.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.95 : 4,817.39 = 2,311.40 : x
  2. Step 2: Convert to fraction form
    3,489.95/4,817.39 = 2,311.40/x
  3. Step 3: Cross multiply
    3,489.95x = 4,817.39 × 2,311.40
  4. Step 4: Simplify right side
    3,489.95x = 11,134,915.25
  5. Step 5: Solve for x
    x = 11,134,915.25/3,489.95
  6. Step 6: Final answer
    x = 3,190.57

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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.