Home / 1,788.21-2,478.87-1,718.96

Finding the Fourth Proportional to 1,788.21, 2,478.87 and 1,718.96

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Solution

The fourth proportional to 1,788.21, 2,478.87 and 1,718.96 is: 2,382.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.21 : 2,478.87 = 1,718.96 : x
  2. Step 2: Convert to fraction form
    1,788.21/2,478.87 = 1,718.96/x
  3. Step 3: Cross multiply
    1,788.21x = 2,478.87 × 1,718.96
  4. Step 4: Simplify right side
    1,788.21x = 4,261,065.98
  5. Step 5: Solve for x
    x = 4,261,065.98/1,788.21
  6. Step 6: Final answer
    x = 2,382.87

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.