Home / 5,145.48-7,716.63-1,858.14

Finding the Fourth Proportional to 5,145.48, 7,716.63 and 1,858.14

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Solution

The fourth proportional to 5,145.48, 7,716.63 and 1,858.14 is: 2,786.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.48 : 7,716.63 = 1,858.14 : x
  2. Step 2: Convert to fraction form
    5,145.48/7,716.63 = 1,858.14/x
  3. Step 3: Cross multiply
    5,145.48x = 7,716.63 × 1,858.14
  4. Step 4: Simplify right side
    5,145.48x = 14,338,578.87
  5. Step 5: Solve for x
    x = 14,338,578.87/5,145.48
  6. Step 6: Final answer
    x = 2,786.64

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1.5x scale

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.