Home / 3,403.93-4,697.78-1,911.76

Finding the Fourth Proportional to 3,403.93, 4,697.78 and 1,911.76

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Solution

The fourth proportional to 3,403.93, 4,697.78 and 1,911.76 is: 2,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.93 : 4,697.78 = 1,911.76 : x
  2. Step 2: Convert to fraction form
    3,403.93/4,697.78 = 1,911.76/x
  3. Step 3: Cross multiply
    3,403.93x = 4,697.78 × 1,911.76
  4. Step 4: Simplify right side
    3,403.93x = 8,981,027.89
  5. Step 5: Solve for x
    x = 8,981,027.89/3,403.93
  6. Step 6: Final answer
    x = 2,638.43

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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.