Home / 5,415.05-8,121.89-1,717.65

Finding the Fourth Proportional to 5,415.05, 8,121.89 and 1,717.65

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Solution

The fourth proportional to 5,415.05, 8,121.89 and 1,717.65 is: 2,576.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.05 : 8,121.89 = 1,717.65 : x
  2. Step 2: Convert to fraction form
    5,415.05/8,121.89 = 1,717.65/x
  3. Step 3: Cross multiply
    5,415.05x = 8,121.89 × 1,717.65
  4. Step 4: Simplify right side
    5,415.05x = 13,950,555.77
  5. Step 5: Solve for x
    x = 13,950,555.77/5,415.05
  6. Step 6: Final answer
    x = 2,576.26

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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.