Home / 8,389.17-12,576.47-3,455.39

Finding the Fourth Proportional to 8,389.17, 12,576.47 and 3,455.39

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Solution

The fourth proportional to 8,389.17, 12,576.47 and 3,455.39 is: 5,180.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.17 : 12,576.47 = 3,455.39 : x
  2. Step 2: Convert to fraction form
    8,389.17/12,576.47 = 3,455.39/x
  3. Step 3: Cross multiply
    8,389.17x = 12,576.47 × 3,455.39
  4. Step 4: Simplify right side
    8,389.17x = 43,456,622.84
  5. Step 5: Solve for x
    x = 43,456,622.84/8,389.17
  6. Step 6: Final answer
    x = 5,180.09

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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.