Home / 3,971.76-5,479.41-2,479.14

Finding the Fourth Proportional to 3,971.76, 5,479.41 and 2,479.14

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Solution

The fourth proportional to 3,971.76, 5,479.41 and 2,479.14 is: 3,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.76 : 5,479.41 = 2,479.14 : x
  2. Step 2: Convert to fraction form
    3,971.76/5,479.41 = 2,479.14/x
  3. Step 3: Cross multiply
    3,971.76x = 5,479.41 × 2,479.14
  4. Step 4: Simplify right side
    3,971.76x = 13,584,224.51
  5. Step 5: Solve for x
    x = 13,584,224.51/3,971.76
  6. Step 6: Final answer
    x = 3,420.20

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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.