Home / 3,077.60-4,249.08-1,900.40

Finding the Fourth Proportional to 3,077.60, 4,249.08 and 1,900.40

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Solution

The fourth proportional to 3,077.60, 4,249.08 and 1,900.40 is: 2,623.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.60 : 4,249.08 = 1,900.40 : x
  2. Step 2: Convert to fraction form
    3,077.60/4,249.08 = 1,900.40/x
  3. Step 3: Cross multiply
    3,077.60x = 4,249.08 × 1,900.40
  4. Step 4: Simplify right side
    3,077.60x = 8,074,951.63
  5. Step 5: Solve for x
    x = 8,074,951.63/3,077.60
  6. Step 6: Final answer
    x = 2,623.78

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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.