Home / 2,272.07-3,135.99-1,388.62

Finding the Fourth Proportional to 2,272.07, 3,135.99 and 1,388.62

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Solution

The fourth proportional to 2,272.07, 3,135.99 and 1,388.62 is: 1,916.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.07 : 3,135.99 = 1,388.62 : x
  2. Step 2: Convert to fraction form
    2,272.07/3,135.99 = 1,388.62/x
  3. Step 3: Cross multiply
    2,272.07x = 3,135.99 × 1,388.62
  4. Step 4: Simplify right side
    2,272.07x = 4,354,698.43
  5. Step 5: Solve for x
    x = 4,354,698.43/2,272.07
  6. Step 6: Final answer
    x = 1,916.62

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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.