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Finding the Fourth Proportional to 8,976.45, 13,464.68 and 2,820.45

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Solution

The fourth proportional to 8,976.45, 13,464.68 and 2,820.45 is: 4,230.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.45 : 13,464.68 = 2,820.45 : x
  2. Step 2: Convert to fraction form
    8,976.45/13,464.68 = 2,820.45/x
  3. Step 3: Cross multiply
    8,976.45x = 13,464.68 × 2,820.45
  4. Step 4: Simplify right side
    8,976.45x = 37,976,456.71
  5. Step 5: Solve for x
    x = 37,976,456.71/8,976.45
  6. Step 6: Final answer
    x = 4,230.68

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1.5x scale

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.