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Finding the Fourth Proportional to 8,328.69, 12,495.13 and 2,485.28

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Solution

The fourth proportional to 8,328.69, 12,495.13 and 2,485.28 is: 3,728.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,328.69 : 12,495.13 = 2,485.28 : x
  2. Step 2: Convert to fraction form
    8,328.69/12,495.13 = 2,485.28/x
  3. Step 3: Cross multiply
    8,328.69x = 12,495.13 × 2,485.28
  4. Step 4: Simplify right side
    8,328.69x = 31,053,921.71
  5. Step 5: Solve for x
    x = 31,053,921.71/8,328.69
  6. Step 6: Final answer
    x = 3,728.55

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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.