Home / 5,075.82-7,612.70-1,378.31

Finding the Fourth Proportional to 5,075.82, 7,612.70 and 1,378.31

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Solution

The fourth proportional to 5,075.82, 7,612.70 and 1,378.31 is: 2,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,075.82 : 7,612.70 = 1,378.31 : x
  2. Step 2: Convert to fraction form
    5,075.82/7,612.70 = 1,378.31/x
  3. Step 3: Cross multiply
    5,075.82x = 7,612.70 × 1,378.31
  4. Step 4: Simplify right side
    5,075.82x = 10,492,660.54
  5. Step 5: Solve for x
    x = 10,492,660.54/5,075.82
  6. Step 6: Final answer
    x = 2,067.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.