Home / 3,955.80-5,456.88-3,210.60

Finding the Fourth Proportional to 3,955.80, 5,456.88 and 3,210.60

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Solution

The fourth proportional to 3,955.80, 5,456.88 and 3,210.60 is: 4,428.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.80 : 5,456.88 = 3,210.60 : x
  2. Step 2: Convert to fraction form
    3,955.80/5,456.88 = 3,210.60/x
  3. Step 3: Cross multiply
    3,955.80x = 5,456.88 × 3,210.60
  4. Step 4: Simplify right side
    3,955.80x = 17,519,858.93
  5. Step 5: Solve for x
    x = 17,519,858.93/3,955.80
  6. Step 6: Final answer
    x = 4,428.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.