Home / 3,149.79-4,346.37-1,890.81

Finding the Fourth Proportional to 3,149.79, 4,346.37 and 1,890.81

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Solution

The fourth proportional to 3,149.79, 4,346.37 and 1,890.81 is: 2,609.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.79 : 4,346.37 = 1,890.81 : x
  2. Step 2: Convert to fraction form
    3,149.79/4,346.37 = 1,890.81/x
  3. Step 3: Cross multiply
    3,149.79x = 4,346.37 × 1,890.81
  4. Step 4: Simplify right side
    3,149.79x = 8,218,159.86
  5. Step 5: Solve for x
    x = 8,218,159.86/3,149.79
  6. Step 6: Final answer
    x = 2,609.11

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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.