Home / 2,780.48-4,170.84-1,376.24

Finding the Fourth Proportional to 2,780.48, 4,170.84 and 1,376.24

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Solution

The fourth proportional to 2,780.48, 4,170.84 and 1,376.24 is: 2,064.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.48 : 4,170.84 = 1,376.24 : x
  2. Step 2: Convert to fraction form
    2,780.48/4,170.84 = 1,376.24/x
  3. Step 3: Cross multiply
    2,780.48x = 4,170.84 × 1,376.24
  4. Step 4: Simplify right side
    2,780.48x = 5,740,076.84
  5. Step 5: Solve for x
    x = 5,740,076.84/2,780.48
  6. Step 6: Final answer
    x = 2,064.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.