Home / 3,106.94-4,287.65-1,781.06

Finding the Fourth Proportional to 3,106.94, 4,287.65 and 1,781.06

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Solution

The fourth proportional to 3,106.94, 4,287.65 and 1,781.06 is: 2,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.94 : 4,287.65 = 1,781.06 : x
  2. Step 2: Convert to fraction form
    3,106.94/4,287.65 = 1,781.06/x
  3. Step 3: Cross multiply
    3,106.94x = 4,287.65 × 1,781.06
  4. Step 4: Simplify right side
    3,106.94x = 7,636,531.57
  5. Step 5: Solve for x
    x = 7,636,531.57/3,106.94
  6. Step 6: Final answer
    x = 2,457.90

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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.