Home / 2,907.36-4,004.40-2,777.76

Finding the Fourth Proportional to 2,907.36, 4,004.40 and 2,777.76

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Solution

The fourth proportional to 2,907.36, 4,004.40 and 2,777.76 is: 3,825.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.36 : 4,004.40 = 2,777.76 : x
  2. Step 2: Convert to fraction form
    2,907.36/4,004.40 = 2,777.76/x
  3. Step 3: Cross multiply
    2,907.36x = 4,004.40 × 2,777.76
  4. Step 4: Simplify right side
    2,907.36x = 11,123,262.14
  5. Step 5: Solve for x
    x = 11,123,262.14/2,907.36
  6. Step 6: Final answer
    x = 3,825.90

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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.