Home / 1,347.44-1,858.68-905.94

Finding the Fourth Proportional to 1,347.44, 1,858.68 and 905.94

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Solution

The fourth proportional to 1,347.44, 1,858.68 and 905.94 is: 1,249.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.44 : 1,858.68 = 905.94 : x
  2. Step 2: Convert to fraction form
    1,347.44/1,858.68 = 905.94/x
  3. Step 3: Cross multiply
    1,347.44x = 1,858.68 × 905.94
  4. Step 4: Simplify right side
    1,347.44x = 1,683,852.56
  5. Step 5: Solve for x
    x = 1,683,852.56/1,347.44
  6. Step 6: Final answer
    x = 1,249.67

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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.