Home / 3,486.83-4,811.85-1,914.89

Finding the Fourth Proportional to 3,486.83, 4,811.85 and 1,914.89

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Solution

The fourth proportional to 3,486.83, 4,811.85 and 1,914.89 is: 2,642.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.83 : 4,811.85 = 1,914.89 : x
  2. Step 2: Convert to fraction form
    3,486.83/4,811.85 = 1,914.89/x
  3. Step 3: Cross multiply
    3,486.83x = 4,811.85 × 1,914.89
  4. Step 4: Simplify right side
    3,486.83x = 9,214,139.39
  5. Step 5: Solve for x
    x = 9,214,139.39/3,486.83
  6. Step 6: Final answer
    x = 2,642.56

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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.