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Finding the Fourth Proportional to 2,883.78, 3,979.64 and 1,624.84

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Solution

The fourth proportional to 2,883.78, 3,979.64 and 1,624.84 is: 2,242.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,883.78 : 3,979.64 = 1,624.84 : x
  2. Step 2: Convert to fraction form
    2,883.78/3,979.64 = 1,624.84/x
  3. Step 3: Cross multiply
    2,883.78x = 3,979.64 × 1,624.84
  4. Step 4: Simplify right side
    2,883.78x = 6,466,272.37
  5. Step 5: Solve for x
    x = 6,466,272.37/2,883.78
  6. Step 6: Final answer
    x = 2,242.29

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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.