Home / 1,236.08-1,719.44-1,212.32

Finding the Fourth Proportional to 1,236.08, 1,719.44 and 1,212.32

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Solution

The fourth proportional to 1,236.08, 1,719.44 and 1,212.32 is: 1,686.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236.08 : 1,719.44 = 1,212.32 : x
  2. Step 2: Convert to fraction form
    1,236.08/1,719.44 = 1,212.32/x
  3. Step 3: Cross multiply
    1,236.08x = 1,719.44 × 1,212.32
  4. Step 4: Simplify right side
    1,236.08x = 2,084,511.50
  5. Step 5: Solve for x
    x = 2,084,511.50/1,236.08
  6. Step 6: Final answer
    x = 1,686.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.