Home / 2,021.47-2,789.34-1,125.16

Finding the Fourth Proportional to 2,021.47, 2,789.34 and 1,125.16

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Solution

The fourth proportional to 2,021.47, 2,789.34 and 1,125.16 is: 1,552.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.47 : 2,789.34 = 1,125.16 : x
  2. Step 2: Convert to fraction form
    2,021.47/2,789.34 = 1,125.16/x
  3. Step 3: Cross multiply
    2,021.47x = 2,789.34 × 1,125.16
  4. Step 4: Simplify right side
    2,021.47x = 3,138,453.79
  5. Step 5: Solve for x
    x = 3,138,453.79/2,021.47
  6. Step 6: Final answer
    x = 1,552.56

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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.