Home / 5,145.48-7,101.80-2,907.39

Finding the Fourth Proportional to 5,145.48, 7,101.80 and 2,907.39

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Solution

The fourth proportional to 5,145.48, 7,101.80 and 2,907.39 is: 4,012.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.48 : 7,101.80 = 2,907.39 : x
  2. Step 2: Convert to fraction form
    5,145.48/7,101.80 = 2,907.39/x
  3. Step 3: Cross multiply
    5,145.48x = 7,101.80 × 2,907.39
  4. Step 4: Simplify right side
    5,145.48x = 20,647,687.77
  5. Step 5: Solve for x
    x = 20,647,687.77/5,145.48
  6. Step 6: Final answer
    x = 4,012.78

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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.