Home / 3,108.14-4,287.88-1,781.54

Finding the Fourth Proportional to 3,108.14, 4,287.88 and 1,781.54

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Solution

The fourth proportional to 3,108.14, 4,287.88 and 1,781.54 is: 2,457.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.14 : 4,287.88 = 1,781.54 : x
  2. Step 2: Convert to fraction form
    3,108.14/4,287.88 = 1,781.54/x
  3. Step 3: Cross multiply
    3,108.14x = 4,287.88 × 1,781.54
  4. Step 4: Simplify right side
    3,108.14x = 7,639,003.84
  5. Step 5: Solve for x
    x = 7,639,003.84/3,108.14
  6. Step 6: Final answer
    x = 2,457.75

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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.