Home / 3,129.88-4,318.04-2,068.15

Finding the Fourth Proportional to 3,129.88, 4,318.04 and 2,068.15

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Solution

The fourth proportional to 3,129.88, 4,318.04 and 2,068.15 is: 2,853.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.88 : 4,318.04 = 2,068.15 : x
  2. Step 2: Convert to fraction form
    3,129.88/4,318.04 = 2,068.15/x
  3. Step 3: Cross multiply
    3,129.88x = 4,318.04 × 2,068.15
  4. Step 4: Simplify right side
    3,129.88x = 8,930,322.50
  5. Step 5: Solve for x
    x = 8,930,322.50/3,129.88
  6. Step 6: Final answer
    x = 2,853.25

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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.