Home / 7,921.72-11,885.75-2,992.74

Finding the Fourth Proportional to 7,921.72, 11,885.75 and 2,992.74

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Solution

The fourth proportional to 7,921.72, 11,885.75 and 2,992.74 is: 4,490.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.72 : 11,885.75 = 2,992.74 : x
  2. Step 2: Convert to fraction form
    7,921.72/11,885.75 = 2,992.74/x
  3. Step 3: Cross multiply
    7,921.72x = 11,885.75 × 2,992.74
  4. Step 4: Simplify right side
    7,921.72x = 35,570,959.46
  5. Step 5: Solve for x
    x = 35,570,959.46/7,921.72
  6. Step 6: Final answer
    x = 4,490.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.