Home / 3,970.06-5,481.20-2,774.64

Finding the Fourth Proportional to 3,970.06, 5,481.20 and 2,774.64

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Solution

The fourth proportional to 3,970.06, 5,481.20 and 2,774.64 is: 3,830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.06 : 5,481.20 = 2,774.64 : x
  2. Step 2: Convert to fraction form
    3,970.06/5,481.20 = 2,774.64/x
  3. Step 3: Cross multiply
    3,970.06x = 5,481.20 × 2,774.64
  4. Step 4: Simplify right side
    3,970.06x = 15,208,356.77
  5. Step 5: Solve for x
    x = 15,208,356.77/3,970.06
  6. Step 6: Final answer
    x = 3,830.76

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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.