Home / 3,129.96-4,319.33-1,694.32

Finding the Fourth Proportional to 3,129.96, 4,319.33 and 1,694.32

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Solution

The fourth proportional to 3,129.96, 4,319.33 and 1,694.32 is: 2,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.96 : 4,319.33 = 1,694.32 : x
  2. Step 2: Convert to fraction form
    3,129.96/4,319.33 = 1,694.32/x
  3. Step 3: Cross multiply
    3,129.96x = 4,319.33 × 1,694.32
  4. Step 4: Simplify right side
    3,129.96x = 7,318,327.21
  5. Step 5: Solve for x
    x = 7,318,327.21/3,129.96
  6. Step 6: Final answer
    x = 2,338.15

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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.