Home / 5,127.24-7,075.79-2,889.21

Finding the Fourth Proportional to 5,127.24, 7,075.79 and 2,889.21

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Solution

The fourth proportional to 5,127.24, 7,075.79 and 2,889.21 is: 3,987.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.24 : 7,075.79 = 2,889.21 : x
  2. Step 2: Convert to fraction form
    5,127.24/7,075.79 = 2,889.21/x
  3. Step 3: Cross multiply
    5,127.24x = 7,075.79 × 2,889.21
  4. Step 4: Simplify right side
    5,127.24x = 20,443,443.23
  5. Step 5: Solve for x
    x = 20,443,443.23/5,127.24
  6. Step 6: Final answer
    x = 3,987.22

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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.