Home / 1,644.32-2,267.78-1,055.72

Finding the Fourth Proportional to 1,644.32, 2,267.78 and 1,055.72

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Solution

The fourth proportional to 1,644.32, 2,267.78 and 1,055.72 is: 1,456.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.32 : 2,267.78 = 1,055.72 : x
  2. Step 2: Convert to fraction form
    1,644.32/2,267.78 = 1,055.72/x
  3. Step 3: Cross multiply
    1,644.32x = 2,267.78 × 1,055.72
  4. Step 4: Simplify right side
    1,644.32x = 2,394,124.08
  5. Step 5: Solve for x
    x = 2,394,124.08/1,644.32
  6. Step 6: Final answer
    x = 1,456.00

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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.