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Finding the Fourth Proportional to 7,320.62, 10,980.60 and 2,389.62

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Solution

The fourth proportional to 7,320.62, 10,980.60 and 2,389.62 is: 3,584.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.62 : 10,980.60 = 2,389.62 : x
  2. Step 2: Convert to fraction form
    7,320.62/10,980.60 = 2,389.62/x
  3. Step 3: Cross multiply
    7,320.62x = 10,980.60 × 2,389.62
  4. Step 4: Simplify right side
    7,320.62x = 26,239,461.37
  5. Step 5: Solve for x
    x = 26,239,461.37/7,320.62
  6. Step 6: Final answer
    x = 3,584.32

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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.