Home / 5,278.77-7,907.32-2,638.37

Finding the Fourth Proportional to 5,278.77, 7,907.32 and 2,638.37

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Solution

The fourth proportional to 5,278.77, 7,907.32 and 2,638.37 is: 3,952.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.77 : 7,907.32 = 2,638.37 : x
  2. Step 2: Convert to fraction form
    5,278.77/7,907.32 = 2,638.37/x
  3. Step 3: Cross multiply
    5,278.77x = 7,907.32 × 2,638.37
  4. Step 4: Simplify right side
    5,278.77x = 20,862,458.93
  5. Step 5: Solve for x
    x = 20,862,458.93/5,278.77
  6. Step 6: Final answer
    x = 3,952.14

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1.5x scale

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.