Home / 1,992.32-2,749.56-1,246.40

Finding the Fourth Proportional to 1,992.32, 2,749.56 and 1,246.40

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Solution

The fourth proportional to 1,992.32, 2,749.56 and 1,246.40 is: 1,720.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.32 : 2,749.56 = 1,246.40 : x
  2. Step 2: Convert to fraction form
    1,992.32/2,749.56 = 1,246.40/x
  3. Step 3: Cross multiply
    1,992.32x = 2,749.56 × 1,246.40
  4. Step 4: Simplify right side
    1,992.32x = 3,427,051.58
  5. Step 5: Solve for x
    x = 3,427,051.58/1,992.32
  6. Step 6: Final answer
    x = 1,720.13

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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.