Home / 1,921.26-2,650.37-1,124.07

Finding the Fourth Proportional to 1,921.26, 2,650.37 and 1,124.07

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Solution

The fourth proportional to 1,921.26, 2,650.37 and 1,124.07 is: 1,550.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.26 : 2,650.37 = 1,124.07 : x
  2. Step 2: Convert to fraction form
    1,921.26/2,650.37 = 1,124.07/x
  3. Step 3: Cross multiply
    1,921.26x = 2,650.37 × 1,124.07
  4. Step 4: Simplify right side
    1,921.26x = 2,979,195.79
  5. Step 5: Solve for x
    x = 2,979,195.79/1,921.26
  6. Step 6: Final answer
    x = 1,550.65

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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.