Home / 4,285.78-6,428.55-3,247.75

Finding the Fourth Proportional to 4,285.78, 6,428.55 and 3,247.75

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Solution

The fourth proportional to 4,285.78, 6,428.55 and 3,247.75 is: 4,871.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.78 : 6,428.55 = 3,247.75 : x
  2. Step 2: Convert to fraction form
    4,285.78/6,428.55 = 3,247.75/x
  3. Step 3: Cross multiply
    4,285.78x = 6,428.55 × 3,247.75
  4. Step 4: Simplify right side
    4,285.78x = 20,878,323.26
  5. Step 5: Solve for x
    x = 20,878,323.26/4,285.78
  6. Step 6: Final answer
    x = 4,871.53

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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.