Home / 1,830.67-2,525.75-1,121.78

Finding the Fourth Proportional to 1,830.67, 2,525.75 and 1,121.78

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Solution

The fourth proportional to 1,830.67, 2,525.75 and 1,121.78 is: 1,547.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830.67 : 2,525.75 = 1,121.78 : x
  2. Step 2: Convert to fraction form
    1,830.67/2,525.75 = 1,121.78/x
  3. Step 3: Cross multiply
    1,830.67x = 2,525.75 × 1,121.78
  4. Step 4: Simplify right side
    1,830.67x = 2,833,340.75
  5. Step 5: Solve for x
    x = 2,833,340.75/1,830.67
  6. Step 6: Final answer
    x = 1,547.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.