Home / 3,127.35-4,315.72-1,801.30

Finding the Fourth Proportional to 3,127.35, 4,315.72 and 1,801.30

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Solution

The fourth proportional to 3,127.35, 4,315.72 and 1,801.30 is: 2,485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.35 : 4,315.72 = 1,801.30 : x
  2. Step 2: Convert to fraction form
    3,127.35/4,315.72 = 1,801.30/x
  3. Step 3: Cross multiply
    3,127.35x = 4,315.72 × 1,801.30
  4. Step 4: Simplify right side
    3,127.35x = 7,773,906.44
  5. Step 5: Solve for x
    x = 7,773,906.44/3,127.35
  6. Step 6: Final answer
    x = 2,485.78

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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.