Home / 2,977.14-4,106.62-1,929.20

Finding the Fourth Proportional to 2,977.14, 4,106.62 and 1,929.20

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Solution

The fourth proportional to 2,977.14, 4,106.62 and 1,929.20 is: 2,661.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.14 : 4,106.62 = 1,929.20 : x
  2. Step 2: Convert to fraction form
    2,977.14/4,106.62 = 1,929.20/x
  3. Step 3: Cross multiply
    2,977.14x = 4,106.62 × 1,929.20
  4. Step 4: Simplify right side
    2,977.14x = 7,922,491.30
  5. Step 5: Solve for x
    x = 7,922,491.30/2,977.14
  6. Step 6: Final answer
    x = 2,661.11

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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.