Home / 5,126.83-7,075.15-3,138.48

Finding the Fourth Proportional to 5,126.83, 7,075.15 and 3,138.48

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Solution

The fourth proportional to 5,126.83, 7,075.15 and 3,138.48 is: 4,331.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.83 : 7,075.15 = 3,138.48 : x
  2. Step 2: Convert to fraction form
    5,126.83/7,075.15 = 3,138.48/x
  3. Step 3: Cross multiply
    5,126.83x = 7,075.15 × 3,138.48
  4. Step 4: Simplify right side
    5,126.83x = 22,205,208.93
  5. Step 5: Solve for x
    x = 22,205,208.93/5,126.83
  6. Step 6: Final answer
    x = 4,331.18

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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.