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Finding the Fourth Proportional to 2,969.04, 4,099.80 and 2,086.80

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Solution

The fourth proportional to 2,969.04, 4,099.80 and 2,086.80 is: 2,881.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,969.04 : 4,099.80 = 2,086.80 : x
  2. Step 2: Convert to fraction form
    2,969.04/4,099.80 = 2,086.80/x
  3. Step 3: Cross multiply
    2,969.04x = 4,099.80 × 2,086.80
  4. Step 4: Simplify right side
    2,969.04x = 8,555,462.64
  5. Step 5: Solve for x
    x = 8,555,462.64/2,969.04
  6. Step 6: Final answer
    x = 2,881.56

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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.