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Finding the Fourth Proportional to 9,917.66, 14,878.92 and 3,345.32

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Solution

The fourth proportional to 9,917.66, 14,878.92 and 3,345.32 is: 5,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,917.66 : 14,878.92 = 3,345.32 : x
  2. Step 2: Convert to fraction form
    9,917.66/14,878.92 = 3,345.32/x
  3. Step 3: Cross multiply
    9,917.66x = 14,878.92 × 3,345.32
  4. Step 4: Simplify right side
    9,917.66x = 49,774,748.65
  5. Step 5: Solve for x
    x = 49,774,748.65/9,917.66
  6. Step 6: Final answer
    x = 5,018.80

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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.