Home / 3,390.82-4,679.40-1,898.84

Finding the Fourth Proportional to 3,390.82, 4,679.40 and 1,898.84

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Solution

The fourth proportional to 3,390.82, 4,679.40 and 1,898.84 is: 2,620.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.82 : 4,679.40 = 1,898.84 : x
  2. Step 2: Convert to fraction form
    3,390.82/4,679.40 = 1,898.84/x
  3. Step 3: Cross multiply
    3,390.82x = 4,679.40 × 1,898.84
  4. Step 4: Simplify right side
    3,390.82x = 8,885,431.90
  5. Step 5: Solve for x
    x = 8,885,431.90/3,390.82
  6. Step 6: Final answer
    x = 2,620.44

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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.