Home / 4,758.88-7,138.34-1,680.88

Finding the Fourth Proportional to 4,758.88, 7,138.34 and 1,680.88

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Solution

The fourth proportional to 4,758.88, 7,138.34 and 1,680.88 is: 2,521.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,758.88 : 7,138.34 = 1,680.88 : x
  2. Step 2: Convert to fraction form
    4,758.88/7,138.34 = 1,680.88/x
  3. Step 3: Cross multiply
    4,758.88x = 7,138.34 × 1,680.88
  4. Step 4: Simplify right side
    4,758.88x = 11,998,692.94
  5. Step 5: Solve for x
    x = 11,998,692.94/4,758.88
  6. Step 6: Final answer
    x = 2,521.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.