Home / 3,098.89-4,276.93-1,980.57

Finding the Fourth Proportional to 3,098.89, 4,276.93 and 1,980.57

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Solution

The fourth proportional to 3,098.89, 4,276.93 and 1,980.57 is: 2,733.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.89 : 4,276.93 = 1,980.57 : x
  2. Step 2: Convert to fraction form
    3,098.89/4,276.93 = 1,980.57/x
  3. Step 3: Cross multiply
    3,098.89x = 4,276.93 × 1,980.57
  4. Step 4: Simplify right side
    3,098.89x = 8,470,749.99
  5. Step 5: Solve for x
    x = 8,470,749.99/3,098.89
  6. Step 6: Final answer
    x = 2,733.48

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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.