Home / 4,318.41-6,489.93-2,128.68

Finding the Fourth Proportional to 4,318.41, 6,489.93 and 2,128.68

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Solution

The fourth proportional to 4,318.41, 6,489.93 and 2,128.68 is: 3,199.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,318.41 : 6,489.93 = 2,128.68 : x
  2. Step 2: Convert to fraction form
    4,318.41/6,489.93 = 2,128.68/x
  3. Step 3: Cross multiply
    4,318.41x = 6,489.93 × 2,128.68
  4. Step 4: Simplify right side
    4,318.41x = 13,814,984.19
  5. Step 5: Solve for x
    x = 13,814,984.19/4,318.41
  6. Step 6: Final answer
    x = 3,199.09

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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.