Home / 4,284.78-6,428.22-1,206.78

Finding the Fourth Proportional to 4,284.78, 6,428.22 and 1,206.78

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Solution

The fourth proportional to 4,284.78, 6,428.22 and 1,206.78 is: 1,810.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,284.78 : 6,428.22 = 1,206.78 : x
  2. Step 2: Convert to fraction form
    4,284.78/6,428.22 = 1,206.78/x
  3. Step 3: Cross multiply
    4,284.78x = 6,428.22 × 1,206.78
  4. Step 4: Simplify right side
    4,284.78x = 7,757,447.33
  5. Step 5: Solve for x
    x = 7,757,447.33/4,284.78
  6. Step 6: Final answer
    x = 1,810.47

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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.