Home / 2,920.14-4,029.80-1,872.20

Finding the Fourth Proportional to 2,920.14, 4,029.80 and 1,872.20

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Solution

The fourth proportional to 2,920.14, 4,029.80 and 1,872.20 is: 2,583.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.14 : 4,029.80 = 1,872.20 : x
  2. Step 2: Convert to fraction form
    2,920.14/4,029.80 = 1,872.20/x
  3. Step 3: Cross multiply
    2,920.14x = 4,029.80 × 1,872.20
  4. Step 4: Simplify right side
    2,920.14x = 7,544,591.56
  5. Step 5: Solve for x
    x = 7,544,591.56/2,920.14
  6. Step 6: Final answer
    x = 2,583.64

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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.