Home / 3,099.63-4,276.42-1,981.22

Finding the Fourth Proportional to 3,099.63, 4,276.42 and 1,981.22

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Solution

The fourth proportional to 3,099.63, 4,276.42 and 1,981.22 is: 2,733.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099.63 : 4,276.42 = 1,981.22 : x
  2. Step 2: Convert to fraction form
    3,099.63/4,276.42 = 1,981.22/x
  3. Step 3: Cross multiply
    3,099.63x = 4,276.42 × 1,981.22
  4. Step 4: Simplify right side
    3,099.63x = 8,472,518.93
  5. Step 5: Solve for x
    x = 8,472,518.93/3,099.63
  6. Step 6: Final answer
    x = 2,733.40

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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.