Home / 2,830.60-3,905.74-1,768.18

Finding the Fourth Proportional to 2,830.60, 3,905.74 and 1,768.18

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Solution

The fourth proportional to 2,830.60, 3,905.74 and 1,768.18 is: 2,439.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.60 : 3,905.74 = 1,768.18 : x
  2. Step 2: Convert to fraction form
    2,830.60/3,905.74 = 1,768.18/x
  3. Step 3: Cross multiply
    2,830.60x = 3,905.74 × 1,768.18
  4. Step 4: Simplify right side
    2,830.60x = 6,906,051.35
  5. Step 5: Solve for x
    x = 6,906,051.35/2,830.60
  6. Step 6: Final answer
    x = 2,439.78

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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.