Home / 3,369.76-4,647.36-2,190.40

Finding the Fourth Proportional to 3,369.76, 4,647.36 and 2,190.40

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Solution

The fourth proportional to 3,369.76, 4,647.36 and 2,190.40 is: 3,020.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,369.76 : 4,647.36 = 2,190.40 : x
  2. Step 2: Convert to fraction form
    3,369.76/4,647.36 = 2,190.40/x
  3. Step 3: Cross multiply
    3,369.76x = 4,647.36 × 2,190.40
  4. Step 4: Simplify right side
    3,369.76x = 10,179,577.34
  5. Step 5: Solve for x
    x = 10,179,577.34/3,369.76
  6. Step 6: Final answer
    x = 3,020.86

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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.