Home / 1,878.27-2,812.55-1,295.07

Finding the Fourth Proportional to 1,878.27, 2,812.55 and 1,295.07

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Solution

The fourth proportional to 1,878.27, 2,812.55 and 1,295.07 is: 1,939.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.27 : 2,812.55 = 1,295.07 : x
  2. Step 2: Convert to fraction form
    1,878.27/2,812.55 = 1,295.07/x
  3. Step 3: Cross multiply
    1,878.27x = 2,812.55 × 1,295.07
  4. Step 4: Simplify right side
    1,878.27x = 3,642,442.65
  5. Step 5: Solve for x
    x = 3,642,442.65/1,878.27
  6. Step 6: Final answer
    x = 1,939.25

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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.