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Finding the Fourth Proportional to 3,970.55, 5,955.80 and 2,218.19

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Solution

The fourth proportional to 3,970.55, 5,955.80 and 2,218.19 is: 3,327.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.55 : 5,955.80 = 2,218.19 : x
  2. Step 2: Convert to fraction form
    3,970.55/5,955.80 = 2,218.19/x
  3. Step 3: Cross multiply
    3,970.55x = 5,955.80 × 2,218.19
  4. Step 4: Simplify right side
    3,970.55x = 13,211,055.13
  5. Step 5: Solve for x
    x = 13,211,055.13/3,970.55
  6. Step 6: Final answer
    x = 3,327.26

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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.