Home / 1,738.09-2,607.11-421.85

Finding the Fourth Proportional to 1,738.09, 2,607.11 and 421.85

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Solution

The fourth proportional to 1,738.09, 2,607.11 and 421.85 is: 632.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738.09 : 2,607.11 = 421.85 : x
  2. Step 2: Convert to fraction form
    1,738.09/2,607.11 = 421.85/x
  3. Step 3: Cross multiply
    1,738.09x = 2,607.11 × 421.85
  4. Step 4: Simplify right side
    1,738.09x = 1,099,816.13
  5. Step 5: Solve for x
    x = 1,099,816.13/1,738.09
  6. Step 6: Final answer
    x = 632.77

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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.