Home / 2,939.97-4,430.18-2,431.40

Finding the Fourth Proportional to 2,939.97, 4,430.18 and 2,431.40

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Solution

The fourth proportional to 2,939.97, 4,430.18 and 2,431.40 is: 3,663.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.97 : 4,430.18 = 2,431.40 : x
  2. Step 2: Convert to fraction form
    2,939.97/4,430.18 = 2,431.40/x
  3. Step 3: Cross multiply
    2,939.97x = 4,430.18 × 2,431.40
  4. Step 4: Simplify right side
    2,939.97x = 10,771,527.50
  5. Step 5: Solve for x
    x = 10,771,527.50/2,939.97
  6. Step 6: Final answer
    x = 3,663.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.