Home / 3,108.63-4,289.85-1,692.30

Finding the Fourth Proportional to 3,108.63, 4,289.85 and 1,692.30

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Solution

The fourth proportional to 3,108.63, 4,289.85 and 1,692.30 is: 2,335.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.63 : 4,289.85 = 1,692.30 : x
  2. Step 2: Convert to fraction form
    3,108.63/4,289.85 = 1,692.30/x
  3. Step 3: Cross multiply
    3,108.63x = 4,289.85 × 1,692.30
  4. Step 4: Simplify right side
    3,108.63x = 7,259,713.16
  5. Step 5: Solve for x
    x = 7,259,713.16/3,108.63
  6. Step 6: Final answer
    x = 2,335.34

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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.