Home / 1,830.32-2,525.66-1,121.90

Finding the Fourth Proportional to 1,830.32, 2,525.66 and 1,121.90

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Solution

The fourth proportional to 1,830.32, 2,525.66 and 1,121.90 is: 1,548.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830.32 : 2,525.66 = 1,121.90 : x
  2. Step 2: Convert to fraction form
    1,830.32/2,525.66 = 1,121.90/x
  3. Step 3: Cross multiply
    1,830.32x = 2,525.66 × 1,121.90
  4. Step 4: Simplify right side
    1,830.32x = 2,833,537.95
  5. Step 5: Solve for x
    x = 2,833,537.95/1,830.32
  6. Step 6: Final answer
    x = 1,548.11

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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.