Home / 1,788.12-2,682.72-1,007.28

Finding the Fourth Proportional to 1,788.12, 2,682.72 and 1,007.28

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Solution

The fourth proportional to 1,788.12, 2,682.72 and 1,007.28 is: 1,511.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.12 : 2,682.72 = 1,007.28 : x
  2. Step 2: Convert to fraction form
    1,788.12/2,682.72 = 1,007.28/x
  3. Step 3: Cross multiply
    1,788.12x = 2,682.72 × 1,007.28
  4. Step 4: Simplify right side
    1,788.12x = 2,702,250.20
  5. Step 5: Solve for x
    x = 2,702,250.20/1,788.12
  6. Step 6: Final answer
    x = 1,511.22

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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.