Home / 2,981.80-4,116.18-2,716.12

Finding the Fourth Proportional to 2,981.80, 4,116.18 and 2,716.12

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Solution

The fourth proportional to 2,981.80, 4,116.18 and 2,716.12 is: 3,749.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.80 : 4,116.18 = 2,716.12 : x
  2. Step 2: Convert to fraction form
    2,981.80/4,116.18 = 2,716.12/x
  3. Step 3: Cross multiply
    2,981.80x = 4,116.18 × 2,716.12
  4. Step 4: Simplify right side
    2,981.80x = 11,180,038.82
  5. Step 5: Solve for x
    x = 11,180,038.82/2,981.80
  6. Step 6: Final answer
    x = 3,749.43

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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.