Home / 1,630.28-2,249.46-931.88

Finding the Fourth Proportional to 1,630.28, 2,249.46 and 931.88

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Solution

The fourth proportional to 1,630.28, 2,249.46 and 931.88 is: 1,285.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,630.28 : 2,249.46 = 931.88 : x
  2. Step 2: Convert to fraction form
    1,630.28/2,249.46 = 931.88/x
  3. Step 3: Cross multiply
    1,630.28x = 2,249.46 × 931.88
  4. Step 4: Simplify right side
    1,630.28x = 2,096,226.78
  5. Step 5: Solve for x
    x = 2,096,226.78/1,630.28
  6. Step 6: Final answer
    x = 1,285.81

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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.