Home / 7,921.19-11,881.89-2,077.65

Finding the Fourth Proportional to 7,921.19, 11,881.89 and 2,077.65

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Solution

The fourth proportional to 7,921.19, 11,881.89 and 2,077.65 is: 3,116.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.19 : 11,881.89 = 2,077.65 : x
  2. Step 2: Convert to fraction form
    7,921.19/11,881.89 = 2,077.65/x
  3. Step 3: Cross multiply
    7,921.19x = 11,881.89 × 2,077.65
  4. Step 4: Simplify right side
    7,921.19x = 24,686,408.76
  5. Step 5: Solve for x
    x = 24,686,408.76/7,921.19
  6. Step 6: Final answer
    x = 3,116.50

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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.