Home / 4,876.46-6,729.63-2,780.78

Finding the Fourth Proportional to 4,876.46, 6,729.63 and 2,780.78

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Solution

The fourth proportional to 4,876.46, 6,729.63 and 2,780.78 is: 3,837.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,876.46 : 6,729.63 = 2,780.78 : x
  2. Step 2: Convert to fraction form
    4,876.46/6,729.63 = 2,780.78/x
  3. Step 3: Cross multiply
    4,876.46x = 6,729.63 × 2,780.78
  4. Step 4: Simplify right side
    4,876.46x = 18,713,620.51
  5. Step 5: Solve for x
    x = 18,713,620.51/4,876.46
  6. Step 6: Final answer
    x = 3,837.54

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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.