Home / 4,907.10-6,772.77-3,138.60

Finding the Fourth Proportional to 4,907.10, 6,772.77 and 3,138.60

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Solution

The fourth proportional to 4,907.10, 6,772.77 and 3,138.60 is: 4,331.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,907.10 : 6,772.77 = 3,138.60 : x
  2. Step 2: Convert to fraction form
    4,907.10/6,772.77 = 3,138.60/x
  3. Step 3: Cross multiply
    4,907.10x = 6,772.77 × 3,138.60
  4. Step 4: Simplify right side
    4,907.10x = 21,257,015.92
  5. Step 5: Solve for x
    x = 21,257,015.92/4,907.10
  6. Step 6: Final answer
    x = 4,331.89

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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.