Home / 1,162.37-1,742.97-421.95

Finding the Fourth Proportional to 1,162.37, 1,742.97 and 421.95

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Solution

The fourth proportional to 1,162.37, 1,742.97 and 421.95 is: 632.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,162.37 : 1,742.97 = 421.95 : x
  2. Step 2: Convert to fraction form
    1,162.37/1,742.97 = 421.95/x
  3. Step 3: Cross multiply
    1,162.37x = 1,742.97 × 421.95
  4. Step 4: Simplify right side
    1,162.37x = 735,446.19
  5. Step 5: Solve for x
    x = 735,446.19/1,162.37
  6. Step 6: Final answer
    x = 632.71

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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.