Home / 5,145.23-7,716.24-1,857.89

Finding the Fourth Proportional to 5,145.23, 7,716.24 and 1,857.89

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Solution

The fourth proportional to 5,145.23, 7,716.24 and 1,857.89 is: 2,786.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.23 : 7,716.24 = 1,857.89 : x
  2. Step 2: Convert to fraction form
    5,145.23/7,716.24 = 1,857.89/x
  3. Step 3: Cross multiply
    5,145.23x = 7,716.24 × 1,857.89
  4. Step 4: Simplify right side
    5,145.23x = 14,335,925.13
  5. Step 5: Solve for x
    x = 14,335,925.13/5,145.23
  6. Step 6: Final answer
    x = 2,786.26

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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.