Home / 1,855.12-2,782.68-1,084.72

Finding the Fourth Proportional to 1,855.12, 2,782.68 and 1,084.72

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Solution

The fourth proportional to 1,855.12, 2,782.68 and 1,084.72 is: 1,627.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.12 : 2,782.68 = 1,084.72 : x
  2. Step 2: Convert to fraction form
    1,855.12/2,782.68 = 1,084.72/x
  3. Step 3: Cross multiply
    1,855.12x = 2,782.68 × 1,084.72
  4. Step 4: Simplify right side
    1,855.12x = 3,018,428.65
  5. Step 5: Solve for x
    x = 3,018,428.65/1,855.12
  6. Step 6: Final answer
    x = 1,627.08

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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.