Home / 2,707.70-4,055.88-1,405.22

Finding the Fourth Proportional to 2,707.70, 4,055.88 and 1,405.22

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Solution

The fourth proportional to 2,707.70, 4,055.88 and 1,405.22 is: 2,104.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,707.70 : 4,055.88 = 1,405.22 : x
  2. Step 2: Convert to fraction form
    2,707.70/4,055.88 = 1,405.22/x
  3. Step 3: Cross multiply
    2,707.70x = 4,055.88 × 1,405.22
  4. Step 4: Simplify right side
    2,707.70x = 5,699,403.69
  5. Step 5: Solve for x
    x = 5,699,403.69/2,707.70
  6. Step 6: Final answer
    x = 2,104.89

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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.