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Finding the Fourth Proportional to 8,424.16, 12,636.24 and 2,580.02

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Solution

The fourth proportional to 8,424.16, 12,636.24 and 2,580.02 is: 3,870.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.16 : 12,636.24 = 2,580.02 : x
  2. Step 2: Convert to fraction form
    8,424.16/12,636.24 = 2,580.02/x
  3. Step 3: Cross multiply
    8,424.16x = 12,636.24 × 2,580.02
  4. Step 4: Simplify right side
    8,424.16x = 32,601,751.92
  5. Step 5: Solve for x
    x = 32,601,751.92/8,424.16
  6. Step 6: Final answer
    x = 3,870.03

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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.