Home / 1,998.41-2,977.52-1,886.63

Finding the Fourth Proportional to 1,998.41, 2,977.52 and 1,886.63

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Solution

The fourth proportional to 1,998.41, 2,977.52 and 1,886.63 is: 2,810.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.41 : 2,977.52 = 1,886.63 : x
  2. Step 2: Convert to fraction form
    1,998.41/2,977.52 = 1,886.63/x
  3. Step 3: Cross multiply
    1,998.41x = 2,977.52 × 1,886.63
  4. Step 4: Simplify right side
    1,998.41x = 5,617,454.24
  5. Step 5: Solve for x
    x = 5,617,454.24/1,998.41
  6. Step 6: Final answer
    x = 2,810.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.