Home / 5,126.78-7,075.08-2,888.73

Finding the Fourth Proportional to 5,126.78, 7,075.08 and 2,888.73

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Solution

The fourth proportional to 5,126.78, 7,075.08 and 2,888.73 is: 3,986.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.78 : 7,075.08 = 2,888.73 : x
  2. Step 2: Convert to fraction form
    5,126.78/7,075.08 = 2,888.73/x
  3. Step 3: Cross multiply
    5,126.78x = 7,075.08 × 2,888.73
  4. Step 4: Simplify right side
    5,126.78x = 20,437,995.85
  5. Step 5: Solve for x
    x = 20,437,995.85/5,126.78
  6. Step 6: Final answer
    x = 3,986.52

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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.