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Finding the Fourth Proportional to 9,879, 14,820.84 and 2,953.68

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Solution

The fourth proportional to 9,879, 14,820.84 and 2,953.68 is: 4,431.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879 : 14,820.84 = 2,953.68 : x
  2. Step 2: Convert to fraction form
    9,879/14,820.84 = 2,953.68/x
  3. Step 3: Cross multiply
    9,879x = 14,820.84 × 2,953.68
  4. Step 4: Simplify right side
    9,879x = 43,776,018.69
  5. Step 5: Solve for x
    x = 43,776,018.69/9,879
  6. Step 6: Final answer
    x = 4,431.22

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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.