Home / 3,071.80-4,239.99-2,656.61

Finding the Fourth Proportional to 3,071.80, 4,239.99 and 2,656.61

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Solution

The fourth proportional to 3,071.80, 4,239.99 and 2,656.61 is: 3,666.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.80 : 4,239.99 = 2,656.61 : x
  2. Step 2: Convert to fraction form
    3,071.80/4,239.99 = 2,656.61/x
  3. Step 3: Cross multiply
    3,071.80x = 4,239.99 × 2,656.61
  4. Step 4: Simplify right side
    3,071.80x = 11,263,986.55
  5. Step 5: Solve for x
    x = 11,263,986.55/3,071.80
  6. Step 6: Final answer
    x = 3,666.91

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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.