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Finding the Fourth Proportional to 7,136.89, 9,848.91 and 3,993.08

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Solution

The fourth proportional to 7,136.89, 9,848.91 and 3,993.08 is: 5,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.89 : 9,848.91 = 3,993.08 : x
  2. Step 2: Convert to fraction form
    7,136.89/9,848.91 = 3,993.08/x
  3. Step 3: Cross multiply
    7,136.89x = 9,848.91 × 3,993.08
  4. Step 4: Simplify right side
    7,136.89x = 39,327,485.54
  5. Step 5: Solve for x
    x = 39,327,485.54/7,136.89
  6. Step 6: Final answer
    x = 5,510.45

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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.