Home / 1,629.96-2,249.28-931.35

Finding the Fourth Proportional to 1,629.96, 2,249.28 and 931.35

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Solution

The fourth proportional to 1,629.96, 2,249.28 and 931.35 is: 1,285.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.96 : 2,249.28 = 931.35 : x
  2. Step 2: Convert to fraction form
    1,629.96/2,249.28 = 931.35/x
  3. Step 3: Cross multiply
    1,629.96x = 2,249.28 × 931.35
  4. Step 4: Simplify right side
    1,629.96x = 2,094,866.93
  5. Step 5: Solve for x
    x = 2,094,866.93/1,629.96
  6. Step 6: Final answer
    x = 1,285.23

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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.