Home / 7,954.12-11,931.48-2,110.78

Finding the Fourth Proportional to 7,954.12, 11,931.48 and 2,110.78

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Solution

The fourth proportional to 7,954.12, 11,931.48 and 2,110.78 is: 3,166.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954.12 : 11,931.48 = 2,110.78 : x
  2. Step 2: Convert to fraction form
    7,954.12/11,931.48 = 2,110.78/x
  3. Step 3: Cross multiply
    7,954.12x = 11,931.48 × 2,110.78
  4. Step 4: Simplify right side
    7,954.12x = 25,184,659.14
  5. Step 5: Solve for x
    x = 25,184,659.14/7,954.12
  6. Step 6: Final answer
    x = 3,166.24

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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.