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Finding the Fourth Proportional to 3,484.99, 4,811.15 and 2,686.57

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Solution

The fourth proportional to 3,484.99, 4,811.15 and 2,686.57 is: 3,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,484.99 : 4,811.15 = 2,686.57 : x
  2. Step 2: Convert to fraction form
    3,484.99/4,811.15 = 2,686.57/x
  3. Step 3: Cross multiply
    3,484.99x = 4,811.15 × 2,686.57
  4. Step 4: Simplify right side
    3,484.99x = 12,925,453.77
  5. Step 5: Solve for x
    x = 12,925,453.77/3,484.99
  6. Step 6: Final answer
    x = 3,708.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.