Home / 2,104.76-3,157.16-1,378.95

Finding the Fourth Proportional to 2,104.76, 3,157.16 and 1,378.95

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Solution

The fourth proportional to 2,104.76, 3,157.16 and 1,378.95 is: 2,068.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.76 : 3,157.16 = 1,378.95 : x
  2. Step 2: Convert to fraction form
    2,104.76/3,157.16 = 1,378.95/x
  3. Step 3: Cross multiply
    2,104.76x = 3,157.16 × 1,378.95
  4. Step 4: Simplify right side
    2,104.76x = 4,353,558.89
  5. Step 5: Solve for x
    x = 4,353,558.89/2,104.76
  6. Step 6: Final answer
    x = 2,068.44

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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.