Home / 5,145.98-7,101.60-2,907.72

Finding the Fourth Proportional to 5,145.98, 7,101.60 and 2,907.72

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Solution

The fourth proportional to 5,145.98, 7,101.60 and 2,907.72 is: 4,012.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.98 : 7,101.60 = 2,907.72 : x
  2. Step 2: Convert to fraction form
    5,145.98/7,101.60 = 2,907.72/x
  3. Step 3: Cross multiply
    5,145.98x = 7,101.60 × 2,907.72
  4. Step 4: Simplify right side
    5,145.98x = 20,649,481.60
  5. Step 5: Solve for x
    x = 20,649,481.60/5,145.98
  6. Step 6: Final answer
    x = 4,012.74

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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.