Home / 3,072.31-4,239.80-1,675.06

Finding the Fourth Proportional to 3,072.31, 4,239.80 and 1,675.06

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Solution

The fourth proportional to 3,072.31, 4,239.80 and 1,675.06 is: 2,311.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.31 : 4,239.80 = 1,675.06 : x
  2. Step 2: Convert to fraction form
    3,072.31/4,239.80 = 1,675.06/x
  3. Step 3: Cross multiply
    3,072.31x = 4,239.80 × 1,675.06
  4. Step 4: Simplify right side
    3,072.31x = 7,101,934.18
  5. Step 5: Solve for x
    x = 7,101,934.18/3,072.31
  6. Step 6: Final answer
    x = 2,311.59

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1.5x scale

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.