Home / 3,106.56-4,287.05-1,781.03

Finding the Fourth Proportional to 3,106.56, 4,287.05 and 1,781.03

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Solution

The fourth proportional to 3,106.56, 4,287.05 and 1,781.03 is: 2,457.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.56 : 4,287.05 = 1,781.03 : x
  2. Step 2: Convert to fraction form
    3,106.56/4,287.05 = 1,781.03/x
  3. Step 3: Cross multiply
    3,106.56x = 4,287.05 × 1,781.03
  4. Step 4: Simplify right side
    3,106.56x = 7,635,349.49
  5. Step 5: Solve for x
    x = 7,635,349.49/3,106.56
  6. Step 6: Final answer
    x = 2,457.81

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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.