Home / 3,970.51-5,479.32-2,202.28

Finding the Fourth Proportional to 3,970.51, 5,479.32 and 2,202.28

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Solution

The fourth proportional to 3,970.51, 5,479.32 and 2,202.28 is: 3,039.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.51 : 5,479.32 = 2,202.28 : x
  2. Step 2: Convert to fraction form
    3,970.51/5,479.32 = 2,202.28/x
  3. Step 3: Cross multiply
    3,970.51x = 5,479.32 × 2,202.28
  4. Step 4: Simplify right side
    3,970.51x = 12,066,996.85
  5. Step 5: Solve for x
    x = 12,066,996.85/3,970.51
  6. Step 6: Final answer
    x = 3,039.16

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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.