Home / 4,751.90-7,125.60-2,778.10

Finding the Fourth Proportional to 4,751.90, 7,125.60 and 2,778.10

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Solution

The fourth proportional to 4,751.90, 7,125.60 and 2,778.10 is: 4,165.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.90 : 7,125.60 = 2,778.10 : x
  2. Step 2: Convert to fraction form
    4,751.90/7,125.60 = 2,778.10/x
  3. Step 3: Cross multiply
    4,751.90x = 7,125.60 × 2,778.10
  4. Step 4: Simplify right side
    4,751.90x = 19,795,629.36
  5. Step 5: Solve for x
    x = 19,795,629.36/4,751.90
  6. Step 6: Final answer
    x = 4,165.83

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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.