Home / 1,777.28-2,662.07-1,289.25

Finding the Fourth Proportional to 1,777.28, 2,662.07 and 1,289.25

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Solution

The fourth proportional to 1,777.28, 2,662.07 and 1,289.25 is: 1,931.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777.28 : 2,662.07 = 1,289.25 : x
  2. Step 2: Convert to fraction form
    1,777.28/2,662.07 = 1,289.25/x
  3. Step 3: Cross multiply
    1,777.28x = 2,662.07 × 1,289.25
  4. Step 4: Simplify right side
    1,777.28x = 3,432,067.30
  5. Step 5: Solve for x
    x = 3,432,067.30/1,777.28
  6. Step 6: Final answer
    x = 1,931.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.