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Finding the Fourth Proportional to 3,980.95, 5,970.21 and 2,601.62

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Solution

The fourth proportional to 3,980.95, 5,970.21 and 2,601.62 is: 3,901.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.95 : 5,970.21 = 2,601.62 : x
  2. Step 2: Convert to fraction form
    3,980.95/5,970.21 = 2,601.62/x
  3. Step 3: Cross multiply
    3,980.95x = 5,970.21 × 2,601.62
  4. Step 4: Simplify right side
    3,980.95x = 15,532,200.52
  5. Step 5: Solve for x
    x = 15,532,200.52/3,980.95
  6. Step 6: Final answer
    x = 3,901.63

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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.