Home / 8,115.36-12,173.76-2,922.72

Finding the Fourth Proportional to 8,115.36, 12,173.76 and 2,922.72

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Solution

The fourth proportional to 8,115.36, 12,173.76 and 2,922.72 is: 4,384.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.36 : 12,173.76 = 2,922.72 : x
  2. Step 2: Convert to fraction form
    8,115.36/12,173.76 = 2,922.72/x
  3. Step 3: Cross multiply
    8,115.36x = 12,173.76 × 2,922.72
  4. Step 4: Simplify right side
    8,115.36x = 35,580,491.83
  5. Step 5: Solve for x
    x = 35,580,491.83/8,115.36
  6. Step 6: Final answer
    x = 4,384.34

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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.