Home / 2,283.09-3,150.39-1,288.30

Finding the Fourth Proportional to 2,283.09, 3,150.39 and 1,288.30

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Solution

The fourth proportional to 2,283.09, 3,150.39 and 1,288.30 is: 1,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,283.09 : 3,150.39 = 1,288.30 : x
  2. Step 2: Convert to fraction form
    2,283.09/3,150.39 = 1,288.30/x
  3. Step 3: Cross multiply
    2,283.09x = 3,150.39 × 1,288.30
  4. Step 4: Simplify right side
    2,283.09x = 4,058,647.44
  5. Step 5: Solve for x
    x = 4,058,647.44/2,283.09
  6. Step 6: Final answer
    x = 1,777.70

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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.