Home / 2,915.35-4,022.46-1,780.73

Finding the Fourth Proportional to 2,915.35, 4,022.46 and 1,780.73

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Solution

The fourth proportional to 2,915.35, 4,022.46 and 1,780.73 is: 2,456.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.35 : 4,022.46 = 1,780.73 : x
  2. Step 2: Convert to fraction form
    2,915.35/4,022.46 = 1,780.73/x
  3. Step 3: Cross multiply
    2,915.35x = 4,022.46 × 1,780.73
  4. Step 4: Simplify right side
    2,915.35x = 7,162,898.85
  5. Step 5: Solve for x
    x = 7,162,898.85/2,915.35
  6. Step 6: Final answer
    x = 2,456.96

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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.