Home / 8,389.03-12,576.31-3,455.59

Finding the Fourth Proportional to 8,389.03, 12,576.31 and 3,455.59

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Solution

The fourth proportional to 8,389.03, 12,576.31 and 3,455.59 is: 5,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.03 : 12,576.31 = 3,455.59 : x
  2. Step 2: Convert to fraction form
    8,389.03/12,576.31 = 3,455.59/x
  3. Step 3: Cross multiply
    8,389.03x = 12,576.31 × 3,455.59
  4. Step 4: Simplify right side
    8,389.03x = 43,458,571.07
  5. Step 5: Solve for x
    x = 43,458,571.07/8,389.03
  6. Step 6: Final answer
    x = 5,180.40

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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.