Home / 1,977.87-2,966.80-1,857.58

Finding the Fourth Proportional to 1,977.87, 2,966.80 and 1,857.58

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Solution

The fourth proportional to 1,977.87, 2,966.80 and 1,857.58 is: 2,786.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.87 : 2,966.80 = 1,857.58 : x
  2. Step 2: Convert to fraction form
    1,977.87/2,966.80 = 1,857.58/x
  3. Step 3: Cross multiply
    1,977.87x = 2,966.80 × 1,857.58
  4. Step 4: Simplify right side
    1,977.87x = 5,511,068.34
  5. Step 5: Solve for x
    x = 5,511,068.34/1,977.87
  6. Step 6: Final answer
    x = 2,786.37

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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.