Home / 2,981.12-4,110.36-2,308.88

Finding the Fourth Proportional to 2,981.12, 4,110.36 and 2,308.88

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Solution

The fourth proportional to 2,981.12, 4,110.36 and 2,308.88 is: 3,183.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.12 : 4,110.36 = 2,308.88 : x
  2. Step 2: Convert to fraction form
    2,981.12/4,110.36 = 2,308.88/x
  3. Step 3: Cross multiply
    2,981.12x = 4,110.36 × 2,308.88
  4. Step 4: Simplify right side
    2,981.12x = 9,490,328.00
  5. Step 5: Solve for x
    x = 9,490,328.00/2,981.12
  6. Step 6: Final answer
    x = 3,183.48

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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.