Home / 1,603.34-2,406.21-1,213.84

Finding the Fourth Proportional to 1,603.34, 2,406.21 and 1,213.84

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Solution

The fourth proportional to 1,603.34, 2,406.21 and 1,213.84 is: 1,821.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.34 : 2,406.21 = 1,213.84 : x
  2. Step 2: Convert to fraction form
    1,603.34/2,406.21 = 1,213.84/x
  3. Step 3: Cross multiply
    1,603.34x = 2,406.21 × 1,213.84
  4. Step 4: Simplify right side
    1,603.34x = 2,920,738.87
  5. Step 5: Solve for x
    x = 2,920,738.87/1,603.34
  6. Step 6: Final answer
    x = 1,821.65

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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.