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Finding the Fourth Proportional to 3,881.99, 5,357.61 and 2,288.99

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Solution

The fourth proportional to 3,881.99, 5,357.61 and 2,288.99 is: 3,159.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.99 : 5,357.61 = 2,288.99 : x
  2. Step 2: Convert to fraction form
    3,881.99/5,357.61 = 2,288.99/x
  3. Step 3: Cross multiply
    3,881.99x = 5,357.61 × 2,288.99
  4. Step 4: Simplify right side
    3,881.99x = 12,263,504.27
  5. Step 5: Solve for x
    x = 12,263,504.27/3,881.99
  6. Step 6: Final answer
    x = 3,159.08

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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.