Home / 2,848.06-3,930.69-2,290.78

Finding the Fourth Proportional to 2,848.06, 3,930.69 and 2,290.78

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Solution

The fourth proportional to 2,848.06, 3,930.69 and 2,290.78 is: 3,161.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,848.06 : 3,930.69 = 2,290.78 : x
  2. Step 2: Convert to fraction form
    2,848.06/3,930.69 = 2,290.78/x
  3. Step 3: Cross multiply
    2,848.06x = 3,930.69 × 2,290.78
  4. Step 4: Simplify right side
    2,848.06x = 9,004,346.04
  5. Step 5: Solve for x
    x = 9,004,346.04/2,848.06
  6. Step 6: Final answer
    x = 3,161.57

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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.