Home / 2,479.79-3,422.16-1,485.07

Finding the Fourth Proportional to 2,479.79, 3,422.16 and 1,485.07

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Solution

The fourth proportional to 2,479.79, 3,422.16 and 1,485.07 is: 2,049.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.79 : 3,422.16 = 1,485.07 : x
  2. Step 2: Convert to fraction form
    2,479.79/3,422.16 = 1,485.07/x
  3. Step 3: Cross multiply
    2,479.79x = 3,422.16 × 1,485.07
  4. Step 4: Simplify right side
    2,479.79x = 5,082,138.60
  5. Step 5: Solve for x
    x = 5,082,138.60/2,479.79
  6. Step 6: Final answer
    x = 2,049.42

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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.