Home / 1,992.90-2,750.52-1,435.23

Finding the Fourth Proportional to 1,992.90, 2,750.52 and 1,435.23

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Solution

The fourth proportional to 1,992.90, 2,750.52 and 1,435.23 is: 1,980.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.90 : 2,750.52 = 1,435.23 : x
  2. Step 2: Convert to fraction form
    1,992.90/2,750.52 = 1,435.23/x
  3. Step 3: Cross multiply
    1,992.90x = 2,750.52 × 1,435.23
  4. Step 4: Simplify right side
    1,992.90x = 3,947,628.82
  5. Step 5: Solve for x
    x = 3,947,628.82/1,992.90
  6. Step 6: Final answer
    x = 1,980.85

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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.