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Finding the Fourth Proportional to 3,970.60, 5,955.90 and 3,606.10

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Solution

The fourth proportional to 3,970.60, 5,955.90 and 3,606.10 is: 5,409.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.60 : 5,955.90 = 3,606.10 : x
  2. Step 2: Convert to fraction form
    3,970.60/5,955.90 = 3,606.10/x
  3. Step 3: Cross multiply
    3,970.60x = 5,955.90 × 3,606.10
  4. Step 4: Simplify right side
    3,970.60x = 21,477,570.99
  5. Step 5: Solve for x
    x = 21,477,570.99/3,970.60
  6. Step 6: Final answer
    x = 5,409.15

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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.