Home / 2,230.78-3,078.04-1,236.01

Finding the Fourth Proportional to 2,230.78, 3,078.04 and 1,236.01

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Solution

The fourth proportional to 2,230.78, 3,078.04 and 1,236.01 is: 1,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.78 : 3,078.04 = 1,236.01 : x
  2. Step 2: Convert to fraction form
    2,230.78/3,078.04 = 1,236.01/x
  3. Step 3: Cross multiply
    2,230.78x = 3,078.04 × 1,236.01
  4. Step 4: Simplify right side
    2,230.78x = 3,804,488.22
  5. Step 5: Solve for x
    x = 3,804,488.22/2,230.78
  6. Step 6: Final answer
    x = 1,705.45

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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.