Home / 3,957.15-5,455.04-2,907.39

Finding the Fourth Proportional to 3,957.15, 5,455.04 and 2,907.39

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Solution

The fourth proportional to 3,957.15, 5,455.04 and 2,907.39 is: 4,007.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.15 : 5,455.04 = 2,907.39 : x
  2. Step 2: Convert to fraction form
    3,957.15/5,455.04 = 2,907.39/x
  3. Step 3: Cross multiply
    3,957.15x = 5,455.04 × 2,907.39
  4. Step 4: Simplify right side
    3,957.15x = 15,859,914.21
  5. Step 5: Solve for x
    x = 15,859,914.21/3,957.15
  6. Step 6: Final answer
    x = 4,007.91

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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.