Home / 1,511.48-2,272.32-1,190.72

Finding the Fourth Proportional to 1,511.48, 2,272.32 and 1,190.72

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Solution

The fourth proportional to 1,511.48, 2,272.32 and 1,190.72 is: 1,790.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.48 : 2,272.32 = 1,190.72 : x
  2. Step 2: Convert to fraction form
    1,511.48/2,272.32 = 1,190.72/x
  3. Step 3: Cross multiply
    1,511.48x = 2,272.32 × 1,190.72
  4. Step 4: Simplify right side
    1,511.48x = 2,705,696.87
  5. Step 5: Solve for x
    x = 2,705,696.87/1,511.48
  6. Step 6: Final answer
    x = 1,790.10

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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.