Home / 3,129.26-4,318.25-1,871.01

Finding the Fourth Proportional to 3,129.26, 4,318.25 and 1,871.01

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Solution

The fourth proportional to 3,129.26, 4,318.25 and 1,871.01 is: 2,581.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.26 : 4,318.25 = 1,871.01 : x
  2. Step 2: Convert to fraction form
    3,129.26/4,318.25 = 1,871.01/x
  3. Step 3: Cross multiply
    3,129.26x = 4,318.25 × 1,871.01
  4. Step 4: Simplify right side
    3,129.26x = 8,079,457.99
  5. Step 5: Solve for x
    x = 8,079,457.99/3,129.26
  6. Step 6: Final answer
    x = 2,581.91

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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.