Home / 7,917.21-11,870.06-5,146.65

Finding the Fourth Proportional to 7,917.21, 11,870.06 and 5,146.65

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Solution

The fourth proportional to 7,917.21, 11,870.06 and 5,146.65 is: 7,716.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.21 : 11,870.06 = 5,146.65 : x
  2. Step 2: Convert to fraction form
    7,917.21/11,870.06 = 5,146.65/x
  3. Step 3: Cross multiply
    7,917.21x = 11,870.06 × 5,146.65
  4. Step 4: Simplify right side
    7,917.21x = 61,091,018.57
  5. Step 5: Solve for x
    x = 61,091,018.57/7,917.21
  6. Step 6: Final answer
    x = 7,716.23

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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.