Home / 8,675.84-11,972.66-5,139.29

Finding the Fourth Proportional to 8,675.84, 11,972.66 and 5,139.29

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Solution

The fourth proportional to 8,675.84, 11,972.66 and 5,139.29 is: 7,092.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,675.84 : 11,972.66 = 5,139.29 : x
  2. Step 2: Convert to fraction form
    8,675.84/11,972.66 = 5,139.29/x
  3. Step 3: Cross multiply
    8,675.84x = 11,972.66 × 5,139.29
  4. Step 4: Simplify right side
    8,675.84x = 61,530,886.25
  5. Step 5: Solve for x
    x = 61,530,886.25/8,675.84
  6. Step 6: Final answer
    x = 7,092.21

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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.