Home / 3,519.72-4,857-1,947.72

Finding the Fourth Proportional to 3,519.72, 4,857 and 1,947.72

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Solution

The fourth proportional to 3,519.72, 4,857 and 1,947.72 is: 2,687.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519.72 : 4,857 = 1,947.72 : x
  2. Step 2: Convert to fraction form
    3,519.72/4,857 = 1,947.72/x
  3. Step 3: Cross multiply
    3,519.72x = 4,857 × 1,947.72
  4. Step 4: Simplify right side
    3,519.72x = 9,460,076.04
  5. Step 5: Solve for x
    x = 9,460,076.04/3,519.72
  6. Step 6: Final answer
    x = 2,687.74

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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.