Home / 1,416.34-2,132.99-1,290.08

Finding the Fourth Proportional to 1,416.34, 2,132.99 and 1,290.08

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Solution

The fourth proportional to 1,416.34, 2,132.99 and 1,290.08 is: 1,942.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.34 : 2,132.99 = 1,290.08 : x
  2. Step 2: Convert to fraction form
    1,416.34/2,132.99 = 1,290.08/x
  3. Step 3: Cross multiply
    1,416.34x = 2,132.99 × 1,290.08
  4. Step 4: Simplify right side
    1,416.34x = 2,751,736.30
  5. Step 5: Solve for x
    x = 2,751,736.30/1,416.34
  6. Step 6: Final answer
    x = 1,942.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.