Home / 3,519.70-4,857.42-1,947.80

Finding the Fourth Proportional to 3,519.70, 4,857.42 and 1,947.80

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Solution

The fourth proportional to 3,519.70, 4,857.42 and 1,947.80 is: 2,688.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519.70 : 4,857.42 = 1,947.80 : x
  2. Step 2: Convert to fraction form
    3,519.70/4,857.42 = 1,947.80/x
  3. Step 3: Cross multiply
    3,519.70x = 4,857.42 × 1,947.80
  4. Step 4: Simplify right side
    3,519.70x = 9,461,263.84
  5. Step 5: Solve for x
    x = 9,461,263.84/3,519.70
  6. Step 6: Final answer
    x = 2,688.09

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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.