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Finding the Fourth Proportional to 2,225.90, 3,072.30 and 1,479.90

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Solution

The fourth proportional to 2,225.90, 3,072.30 and 1,479.90 is: 2,042.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.90 : 3,072.30 = 1,479.90 : x
  2. Step 2: Convert to fraction form
    2,225.90/3,072.30 = 1,479.90/x
  3. Step 3: Cross multiply
    2,225.90x = 3,072.30 × 1,479.90
  4. Step 4: Simplify right side
    2,225.90x = 4,546,696.77
  5. Step 5: Solve for x
    x = 4,546,696.77/2,225.90
  6. Step 6: Final answer
    x = 2,042.63

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1.5x scale

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.