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Finding the Fourth Proportional to 7,118.94, 10,678.38 and 1,924.82

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Solution

The fourth proportional to 7,118.94, 10,678.38 and 1,924.82 is: 2,887.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.94 : 10,678.38 = 1,924.82 : x
  2. Step 2: Convert to fraction form
    7,118.94/10,678.38 = 1,924.82/x
  3. Step 3: Cross multiply
    7,118.94x = 10,678.38 × 1,924.82
  4. Step 4: Simplify right side
    7,118.94x = 20,553,906.00
  5. Step 5: Solve for x
    x = 20,553,906.00/7,118.94
  6. Step 6: Final answer
    x = 2,887.21

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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.