Home / 7,136.18-9,848.31-3,991.82

Finding the Fourth Proportional to 7,136.18, 9,848.31 and 3,991.82

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Solution

The fourth proportional to 7,136.18, 9,848.31 and 3,991.82 is: 5,508.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.18 : 9,848.31 = 3,991.82 : x
  2. Step 2: Convert to fraction form
    7,136.18/9,848.31 = 3,991.82/x
  3. Step 3: Cross multiply
    7,136.18x = 9,848.31 × 3,991.82
  4. Step 4: Simplify right side
    7,136.18x = 39,312,680.82
  5. Step 5: Solve for x
    x = 39,312,680.82/7,136.18
  6. Step 6: Final answer
    x = 5,508.93

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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.