Home / 2,907.87-4,011.60-1,788.45

Finding the Fourth Proportional to 2,907.87, 4,011.60 and 1,788.45

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Solution

The fourth proportional to 2,907.87, 4,011.60 and 1,788.45 is: 2,467.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.87 : 4,011.60 = 1,788.45 : x
  2. Step 2: Convert to fraction form
    2,907.87/4,011.60 = 1,788.45/x
  3. Step 3: Cross multiply
    2,907.87x = 4,011.60 × 1,788.45
  4. Step 4: Simplify right side
    2,907.87x = 7,174,546.02
  5. Step 5: Solve for x
    x = 7,174,546.02/2,907.87
  6. Step 6: Final answer
    x = 2,467.29

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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.