Home / 5,109.44-7,664.66-1,989.71

Finding the Fourth Proportional to 5,109.44, 7,664.66 and 1,989.71

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Solution

The fourth proportional to 5,109.44, 7,664.66 and 1,989.71 is: 2,984.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.44 : 7,664.66 = 1,989.71 : x
  2. Step 2: Convert to fraction form
    5,109.44/7,664.66 = 1,989.71/x
  3. Step 3: Cross multiply
    5,109.44x = 7,664.66 × 1,989.71
  4. Step 4: Simplify right side
    5,109.44x = 15,250,402.38
  5. Step 5: Solve for x
    x = 15,250,402.38/5,109.44
  6. Step 6: Final answer
    x = 2,984.75

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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.