Home / 3,156.30-4,743.90-2,611.98

Finding the Fourth Proportional to 3,156.30, 4,743.90 and 2,611.98

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Solution

The fourth proportional to 3,156.30, 4,743.90 and 2,611.98 is: 3,925.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.30 : 4,743.90 = 2,611.98 : x
  2. Step 2: Convert to fraction form
    3,156.30/4,743.90 = 2,611.98/x
  3. Step 3: Cross multiply
    3,156.30x = 4,743.90 × 2,611.98
  4. Step 4: Simplify right side
    3,156.30x = 12,390,971.92
  5. Step 5: Solve for x
    x = 12,390,971.92/3,156.30
  6. Step 6: Final answer
    x = 3,925.79

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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.