Home / 3,979.48-5,969.58-1,206.16

Finding the Fourth Proportional to 3,979.48, 5,969.58 and 1,206.16

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Solution

The fourth proportional to 3,979.48, 5,969.58 and 1,206.16 is: 1,809.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.48 : 5,969.58 = 1,206.16 : x
  2. Step 2: Convert to fraction form
    3,979.48/5,969.58 = 1,206.16/x
  3. Step 3: Cross multiply
    3,979.48x = 5,969.58 × 1,206.16
  4. Step 4: Simplify right side
    3,979.48x = 7,200,268.61
  5. Step 5: Solve for x
    x = 7,200,268.61/3,979.48
  6. Step 6: Final answer
    x = 1,809.35

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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.