Home / 7,918.80-11,857.68-5,313.84

Finding the Fourth Proportional to 7,918.80, 11,857.68 and 5,313.84

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Solution

The fourth proportional to 7,918.80, 11,857.68 and 5,313.84 is: 7,956.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.80 : 11,857.68 = 5,313.84 : x
  2. Step 2: Convert to fraction form
    7,918.80/11,857.68 = 5,313.84/x
  3. Step 3: Cross multiply
    7,918.80x = 11,857.68 × 5,313.84
  4. Step 4: Simplify right side
    7,918.80x = 63,009,814.29
  5. Step 5: Solve for x
    x = 63,009,814.29/7,918.80
  6. Step 6: Final answer
    x = 7,956.99

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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.