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Finding the Fourth Proportional to 8,920.45, 13,388.98 and 4,541.18

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Solution

The fourth proportional to 8,920.45, 13,388.98 and 4,541.18 is: 6,816.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.45 : 13,388.98 = 4,541.18 : x
  2. Step 2: Convert to fraction form
    8,920.45/13,388.98 = 4,541.18/x
  3. Step 3: Cross multiply
    8,920.45x = 13,388.98 × 4,541.18
  4. Step 4: Simplify right side
    8,920.45x = 60,801,790.32
  5. Step 5: Solve for x
    x = 60,801,790.32/8,920.45
  6. Step 6: Final answer
    x = 6,816.00

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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.