Home / 3,129.09-4,694.55-1,397.31

Finding the Fourth Proportional to 3,129.09, 4,694.55 and 1,397.31

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Solution

The fourth proportional to 3,129.09, 4,694.55 and 1,397.31 is: 2,096.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.09 : 4,694.55 = 1,397.31 : x
  2. Step 2: Convert to fraction form
    3,129.09/4,694.55 = 1,397.31/x
  3. Step 3: Cross multiply
    3,129.09x = 4,694.55 × 1,397.31
  4. Step 4: Simplify right side
    3,129.09x = 6,559,741.66
  5. Step 5: Solve for x
    x = 6,559,741.66/3,129.09
  6. Step 6: Final answer
    x = 2,096.37

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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.