Home / 3,970.76-5,481.24-2,555.96

Finding the Fourth Proportional to 3,970.76, 5,481.24 and 2,555.96

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Solution

The fourth proportional to 3,970.76, 5,481.24 and 2,555.96 is: 3,528.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.76 : 5,481.24 = 2,555.96 : x
  2. Step 2: Convert to fraction form
    3,970.76/5,481.24 = 2,555.96/x
  3. Step 3: Cross multiply
    3,970.76x = 5,481.24 × 2,555.96
  4. Step 4: Simplify right side
    3,970.76x = 14,009,830.19
  5. Step 5: Solve for x
    x = 14,009,830.19/3,970.76
  6. Step 6: Final answer
    x = 3,528.25

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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.