Home / 1,447.59-2,171.75-668.14

Finding the Fourth Proportional to 1,447.59, 2,171.75 and 668.14

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Solution

The fourth proportional to 1,447.59, 2,171.75 and 668.14 is: 1,002.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.59 : 2,171.75 = 668.14 : x
  2. Step 2: Convert to fraction form
    1,447.59/2,171.75 = 668.14/x
  3. Step 3: Cross multiply
    1,447.59x = 2,171.75 × 668.14
  4. Step 4: Simplify right side
    1,447.59x = 1,451,036.99
  5. Step 5: Solve for x
    x = 1,451,036.99/1,447.59
  6. Step 6: Final answer
    x = 1,002.38

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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.