Home / 3,907.12-5,855.58-2,979.28

Finding the Fourth Proportional to 3,907.12, 5,855.58 and 2,979.28

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Solution

The fourth proportional to 3,907.12, 5,855.58 and 2,979.28 is: 4,465.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.12 : 5,855.58 = 2,979.28 : x
  2. Step 2: Convert to fraction form
    3,907.12/5,855.58 = 2,979.28/x
  3. Step 3: Cross multiply
    3,907.12x = 5,855.58 × 2,979.28
  4. Step 4: Simplify right side
    3,907.12x = 17,445,412.38
  5. Step 5: Solve for x
    x = 17,445,412.38/3,907.12
  6. Step 6: Final answer
    x = 4,465.03

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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.