Home / 2,272.41-3,135.69-1,388.43

Finding the Fourth Proportional to 2,272.41, 3,135.69 and 1,388.43

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Solution

The fourth proportional to 2,272.41, 3,135.69 and 1,388.43 is: 1,915.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.41 : 3,135.69 = 1,388.43 : x
  2. Step 2: Convert to fraction form
    2,272.41/3,135.69 = 1,388.43/x
  3. Step 3: Cross multiply
    2,272.41x = 3,135.69 × 1,388.43
  4. Step 4: Simplify right side
    2,272.41x = 4,353,686.07
  5. Step 5: Solve for x
    x = 4,353,686.07/2,272.41
  6. Step 6: Final answer
    x = 1,915.89

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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.