Home / 5,127.30-7,075.80-2,889.27

Finding the Fourth Proportional to 5,127.30, 7,075.80 and 2,889.27

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Solution

The fourth proportional to 5,127.30, 7,075.80 and 2,889.27 is: 3,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.30 : 7,075.80 = 2,889.27 : x
  2. Step 2: Convert to fraction form
    5,127.30/7,075.80 = 2,889.27/x
  3. Step 3: Cross multiply
    5,127.30x = 7,075.80 × 2,889.27
  4. Step 4: Simplify right side
    5,127.30x = 20,443,896.67
  5. Step 5: Solve for x
    x = 20,443,896.67/5,127.30
  6. Step 6: Final answer
    x = 3,987.26

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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.