Home / 2,919.92-4,376.40-1,684.80

Finding the Fourth Proportional to 2,919.92, 4,376.40 and 1,684.80

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Solution

The fourth proportional to 2,919.92, 4,376.40 and 1,684.80 is: 2,525.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.92 : 4,376.40 = 1,684.80 : x
  2. Step 2: Convert to fraction form
    2,919.92/4,376.40 = 1,684.80/x
  3. Step 3: Cross multiply
    2,919.92x = 4,376.40 × 1,684.80
  4. Step 4: Simplify right side
    2,919.92x = 7,373,358.72
  5. Step 5: Solve for x
    x = 7,373,358.72/2,919.92
  6. Step 6: Final answer
    x = 2,525.19

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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.