Home / 2,230.48-3,078.09-1,235.78

Finding the Fourth Proportional to 2,230.48, 3,078.09 and 1,235.78

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Solution

The fourth proportional to 2,230.48, 3,078.09 and 1,235.78 is: 1,705.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.48 : 3,078.09 = 1,235.78 : x
  2. Step 2: Convert to fraction form
    2,230.48/3,078.09 = 1,235.78/x
  3. Step 3: Cross multiply
    2,230.48x = 3,078.09 × 1,235.78
  4. Step 4: Simplify right side
    2,230.48x = 3,803,842.06
  5. Step 5: Solve for x
    x = 3,803,842.06/2,230.48
  6. Step 6: Final answer
    x = 1,705.39

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1.5x scale

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.