Home / 5,126.88-7,074.72-2,888.64

Finding the Fourth Proportional to 5,126.88, 7,074.72 and 2,888.64

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Solution

The fourth proportional to 5,126.88, 7,074.72 and 2,888.64 is: 3,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.88 : 7,074.72 = 2,888.64 : x
  2. Step 2: Convert to fraction form
    5,126.88/7,074.72 = 2,888.64/x
  3. Step 3: Cross multiply
    5,126.88x = 7,074.72 × 2,888.64
  4. Step 4: Simplify right side
    5,126.88x = 20,436,319.18
  5. Step 5: Solve for x
    x = 20,436,319.18/5,126.88
  6. Step 6: Final answer
    x = 3,986.11

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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.