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Finding the Fourth Proportional to 1,833.64, 2,530.36 and 1,005.64

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Solution

The fourth proportional to 1,833.64, 2,530.36 and 1,005.64 is: 1,387.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,833.64 : 2,530.36 = 1,005.64 : x
  2. Step 2: Convert to fraction form
    1,833.64/2,530.36 = 1,005.64/x
  3. Step 3: Cross multiply
    1,833.64x = 2,530.36 × 1,005.64
  4. Step 4: Simplify right side
    1,833.64x = 2,544,631.23
  5. Step 5: Solve for x
    x = 2,544,631.23/1,833.64
  6. Step 6: Final answer
    x = 1,387.75

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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.