Home / 5,126.63-7,075.31-2,889.05

Finding the Fourth Proportional to 5,126.63, 7,075.31 and 2,889.05

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Solution

The fourth proportional to 5,126.63, 7,075.31 and 2,889.05 is: 3,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.63 : 7,075.31 = 2,889.05 : x
  2. Step 2: Convert to fraction form
    5,126.63/7,075.31 = 2,889.05/x
  3. Step 3: Cross multiply
    5,126.63x = 7,075.31 × 2,889.05
  4. Step 4: Simplify right side
    5,126.63x = 20,440,874.53
  5. Step 5: Solve for x
    x = 20,440,874.53/5,126.63
  6. Step 6: Final answer
    x = 3,987.20

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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.