Home / 1,629.86-2,249.51-931.23

Finding the Fourth Proportional to 1,629.86, 2,249.51 and 931.23

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Solution

The fourth proportional to 1,629.86, 2,249.51 and 931.23 is: 1,285.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.86 : 2,249.51 = 931.23 : x
  2. Step 2: Convert to fraction form
    1,629.86/2,249.51 = 931.23/x
  3. Step 3: Cross multiply
    1,629.86x = 2,249.51 × 931.23
  4. Step 4: Simplify right side
    1,629.86x = 2,094,811.20
  5. Step 5: Solve for x
    x = 2,094,811.20/1,629.86
  6. Step 6: Final answer
    x = 1,285.27

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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.