Home / 7,424.16-11,136.24-3,320.16

Finding the Fourth Proportional to 7,424.16, 11,136.24 and 3,320.16

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Solution

The fourth proportional to 7,424.16, 11,136.24 and 3,320.16 is: 4,980.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,424.16 : 11,136.24 = 3,320.16 : x
  2. Step 2: Convert to fraction form
    7,424.16/11,136.24 = 3,320.16/x
  3. Step 3: Cross multiply
    7,424.16x = 11,136.24 × 3,320.16
  4. Step 4: Simplify right side
    7,424.16x = 36,974,098.60
  5. Step 5: Solve for x
    x = 36,974,098.60/7,424.16
  6. Step 6: Final answer
    x = 4,980.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.