Home / 1,947.37-2,686.65-1,249.15

Finding the Fourth Proportional to 1,947.37, 2,686.65 and 1,249.15

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Solution

The fourth proportional to 1,947.37, 2,686.65 and 1,249.15 is: 1,723.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.37 : 2,686.65 = 1,249.15 : x
  2. Step 2: Convert to fraction form
    1,947.37/2,686.65 = 1,249.15/x
  3. Step 3: Cross multiply
    1,947.37x = 2,686.65 × 1,249.15
  4. Step 4: Simplify right side
    1,947.37x = 3,356,028.85
  5. Step 5: Solve for x
    x = 3,356,028.85/1,947.37
  6. Step 6: Final answer
    x = 1,723.36

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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.