Home / 5,127.53-7,075.85-3,138.08

Finding the Fourth Proportional to 5,127.53, 7,075.85 and 3,138.08

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Solution

The fourth proportional to 5,127.53, 7,075.85 and 3,138.08 is: 4,330.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.53 : 7,075.85 = 3,138.08 : x
  2. Step 2: Convert to fraction form
    5,127.53/7,075.85 = 3,138.08/x
  3. Step 3: Cross multiply
    5,127.53x = 7,075.85 × 3,138.08
  4. Step 4: Simplify right side
    5,127.53x = 22,204,532.30
  5. Step 5: Solve for x
    x = 22,204,532.30/5,127.53
  6. Step 6: Final answer
    x = 4,330.46

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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.