Home / 4,140.78-5,714.34-2,277.78

Finding the Fourth Proportional to 4,140.78, 5,714.34 and 2,277.78

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Solution

The fourth proportional to 4,140.78, 5,714.34 and 2,277.78 is: 3,143.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.78 : 5,714.34 = 2,277.78 : x
  2. Step 2: Convert to fraction form
    4,140.78/5,714.34 = 2,277.78/x
  3. Step 3: Cross multiply
    4,140.78x = 5,714.34 × 2,277.78
  4. Step 4: Simplify right side
    4,140.78x = 13,016,009.37
  5. Step 5: Solve for x
    x = 13,016,009.37/4,140.78
  6. Step 6: Final answer
    x = 3,143.37

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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.