Home / 1,879.32-2,593.62-1,290.06

Finding the Fourth Proportional to 1,879.32, 2,593.62 and 1,290.06

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Solution

The fourth proportional to 1,879.32, 2,593.62 and 1,290.06 is: 1,780.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,879.32 : 2,593.62 = 1,290.06 : x
  2. Step 2: Convert to fraction form
    1,879.32/2,593.62 = 1,290.06/x
  3. Step 3: Cross multiply
    1,879.32x = 2,593.62 × 1,290.06
  4. Step 4: Simplify right side
    1,879.32x = 3,345,925.42
  5. Step 5: Solve for x
    x = 3,345,925.42/1,879.32
  6. Step 6: Final answer
    x = 1,780.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.