Home / 1,225.18-1,830.20-982.18

Finding the Fourth Proportional to 1,225.18, 1,830.20 and 982.18

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Solution

The fourth proportional to 1,225.18, 1,830.20 and 982.18 is: 1,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.18 : 1,830.20 = 982.18 : x
  2. Step 2: Convert to fraction form
    1,225.18/1,830.20 = 982.18/x
  3. Step 3: Cross multiply
    1,225.18x = 1,830.20 × 982.18
  4. Step 4: Simplify right side
    1,225.18x = 1,797,585.84
  5. Step 5: Solve for x
    x = 1,797,585.84/1,225.18
  6. Step 6: Final answer
    x = 1,467.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.