Home / 1,629.83-2,249.28-921.44

Finding the Fourth Proportional to 1,629.83, 2,249.28 and 921.44

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Solution

The fourth proportional to 1,629.83, 2,249.28 and 921.44 is: 1,271.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.83 : 2,249.28 = 921.44 : x
  2. Step 2: Convert to fraction form
    1,629.83/2,249.28 = 921.44/x
  3. Step 3: Cross multiply
    1,629.83x = 2,249.28 × 921.44
  4. Step 4: Simplify right side
    1,629.83x = 2,072,582.19
  5. Step 5: Solve for x
    x = 2,072,582.19/1,629.83
  6. Step 6: Final answer
    x = 1,271.65

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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.