Home / 3,100.89-4,278.57-1,775.07

Finding the Fourth Proportional to 3,100.89, 4,278.57 and 1,775.07

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Solution

The fourth proportional to 3,100.89, 4,278.57 and 1,775.07 is: 2,449.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.89 : 4,278.57 = 1,775.07 : x
  2. Step 2: Convert to fraction form
    3,100.89/4,278.57 = 1,775.07/x
  3. Step 3: Cross multiply
    3,100.89x = 4,278.57 × 1,775.07
  4. Step 4: Simplify right side
    3,100.89x = 7,594,761.25
  5. Step 5: Solve for x
    x = 7,594,761.25/3,100.89
  6. Step 6: Final answer
    x = 2,449.22

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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.