Home / 3,431.50-5,148.24-1,971.70

Finding the Fourth Proportional to 3,431.50, 5,148.24 and 1,971.70

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Solution

The fourth proportional to 3,431.50, 5,148.24 and 1,971.70 is: 2,958.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.50 : 5,148.24 = 1,971.70 : x
  2. Step 2: Convert to fraction form
    3,431.50/5,148.24 = 1,971.70/x
  3. Step 3: Cross multiply
    3,431.50x = 5,148.24 × 1,971.70
  4. Step 4: Simplify right side
    3,431.50x = 10,150,784.81
  5. Step 5: Solve for x
    x = 10,150,784.81/3,431.50
  6. Step 6: Final answer
    x = 2,958.12

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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.