Home / 3,489.21-4,817.34-2,164.86

Finding the Fourth Proportional to 3,489.21, 4,817.34 and 2,164.86

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Solution

The fourth proportional to 3,489.21, 4,817.34 and 2,164.86 is: 2,988.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.21 : 4,817.34 = 2,164.86 : x
  2. Step 2: Convert to fraction form
    3,489.21/4,817.34 = 2,164.86/x
  3. Step 3: Cross multiply
    3,489.21x = 4,817.34 × 2,164.86
  4. Step 4: Simplify right side
    3,489.21x = 10,428,866.67
  5. Step 5: Solve for x
    x = 10,428,866.67/3,489.21
  6. Step 6: Final answer
    x = 2,988.89

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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.