Home / 8,431.36-12,640.96-4,045.44

Finding the Fourth Proportional to 8,431.36, 12,640.96 and 4,045.44

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Solution

The fourth proportional to 8,431.36, 12,640.96 and 4,045.44 is: 6,065.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.36 : 12,640.96 = 4,045.44 : x
  2. Step 2: Convert to fraction form
    8,431.36/12,640.96 = 4,045.44/x
  3. Step 3: Cross multiply
    8,431.36x = 12,640.96 × 4,045.44
  4. Step 4: Simplify right side
    8,431.36x = 51,138,245.22
  5. Step 5: Solve for x
    x = 51,138,245.22/8,431.36
  6. Step 6: Final answer
    x = 6,065.24

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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.