Home / 3,100.70-4,278.60-1,774.32

Finding the Fourth Proportional to 3,100.70, 4,278.60 and 1,774.32

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Solution

The fourth proportional to 3,100.70, 4,278.60 and 1,774.32 is: 2,448.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.70 : 4,278.60 = 1,774.32 : x
  2. Step 2: Convert to fraction form
    3,100.70/4,278.60 = 1,774.32/x
  3. Step 3: Cross multiply
    3,100.70x = 4,278.60 × 1,774.32
  4. Step 4: Simplify right side
    3,100.70x = 7,591,605.55
  5. Step 5: Solve for x
    x = 7,591,605.55/3,100.70
  6. Step 6: Final answer
    x = 2,448.36

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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.