Home / 2,939.71-4,056.50-1,760.75

Finding the Fourth Proportional to 2,939.71, 4,056.50 and 1,760.75

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Solution

The fourth proportional to 2,939.71, 4,056.50 and 1,760.75 is: 2,429.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.71 : 4,056.50 = 1,760.75 : x
  2. Step 2: Convert to fraction form
    2,939.71/4,056.50 = 1,760.75/x
  3. Step 3: Cross multiply
    2,939.71x = 4,056.50 × 1,760.75
  4. Step 4: Simplify right side
    2,939.71x = 7,142,457.69
  5. Step 5: Solve for x
    x = 7,142,457.69/2,939.71
  6. Step 6: Final answer
    x = 2,429.65

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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.