Home / 2,128.08-3,189.96-1,347.84

Finding the Fourth Proportional to 2,128.08, 3,189.96 and 1,347.84

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Solution

The fourth proportional to 2,128.08, 3,189.96 and 1,347.84 is: 2,020.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.08 : 3,189.96 = 1,347.84 : x
  2. Step 2: Convert to fraction form
    2,128.08/3,189.96 = 1,347.84/x
  3. Step 3: Cross multiply
    2,128.08x = 3,189.96 × 1,347.84
  4. Step 4: Simplify right side
    2,128.08x = 4,299,555.69
  5. Step 5: Solve for x
    x = 4,299,555.69/2,128.08
  6. Step 6: Final answer
    x = 2,020.39

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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.