Home / 1,679.20-2,505.32-1,494.40

Finding the Fourth Proportional to 1,679.20, 2,505.32 and 1,494.40

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Solution

The fourth proportional to 1,679.20, 2,505.32 and 1,494.40 is: 2,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.20 : 2,505.32 = 1,494.40 : x
  2. Step 2: Convert to fraction form
    1,679.20/2,505.32 = 1,494.40/x
  3. Step 3: Cross multiply
    1,679.20x = 2,505.32 × 1,494.40
  4. Step 4: Simplify right side
    1,679.20x = 3,743,950.21
  5. Step 5: Solve for x
    x = 3,743,950.21/1,679.20
  6. Step 6: Final answer
    x = 2,229.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.