Home / 8,685.53-13,020.57-3,137.66

Finding the Fourth Proportional to 8,685.53, 13,020.57 and 3,137.66

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Solution

The fourth proportional to 8,685.53, 13,020.57 and 3,137.66 is: 4,703.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.53 : 13,020.57 = 3,137.66 : x
  2. Step 2: Convert to fraction form
    8,685.53/13,020.57 = 3,137.66/x
  3. Step 3: Cross multiply
    8,685.53x = 13,020.57 × 3,137.66
  4. Step 4: Simplify right side
    8,685.53x = 40,854,121.67
  5. Step 5: Solve for x
    x = 40,854,121.67/8,685.53
  6. Step 6: Final answer
    x = 4,703.70

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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.