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Finding the Fourth Proportional to 2,889.82, 4,313.84 and 2,687.32

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Solution

The fourth proportional to 2,889.82, 4,313.84 and 2,687.32 is: 4,011.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.82 : 4,313.84 = 2,687.32 : x
  2. Step 2: Convert to fraction form
    2,889.82/4,313.84 = 2,687.32/x
  3. Step 3: Cross multiply
    2,889.82x = 4,313.84 × 2,687.32
  4. Step 4: Simplify right side
    2,889.82x = 11,592,668.51
  5. Step 5: Solve for x
    x = 11,592,668.51/2,889.82
  6. Step 6: Final answer
    x = 4,011.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.