Home / 7,872.12-11,821.34-4,917.44

Finding the Fourth Proportional to 7,872.12, 11,821.34 and 4,917.44

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Solution

The fourth proportional to 7,872.12, 11,821.34 and 4,917.44 is: 7,384.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.12 : 11,821.34 = 4,917.44 : x
  2. Step 2: Convert to fraction form
    7,872.12/11,821.34 = 4,917.44/x
  3. Step 3: Cross multiply
    7,872.12x = 11,821.34 × 4,917.44
  4. Step 4: Simplify right side
    7,872.12x = 58,130,759.72
  5. Step 5: Solve for x
    x = 58,130,759.72/7,872.12
  6. Step 6: Final answer
    x = 7,384.38

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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.