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Finding the Fourth Proportional to 8,682.16, 11,976.98 and 5,490.08

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Solution

The fourth proportional to 8,682.16, 11,976.98 and 5,490.08 is: 7,573.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.16 : 11,976.98 = 5,490.08 : x
  2. Step 2: Convert to fraction form
    8,682.16/11,976.98 = 5,490.08/x
  3. Step 3: Cross multiply
    8,682.16x = 11,976.98 × 5,490.08
  4. Step 4: Simplify right side
    8,682.16x = 65,754,518.47
  5. Step 5: Solve for x
    x = 65,754,518.47/8,682.16
  6. Step 6: Final answer
    x = 7,573.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.