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Finding the Third Proportional to 1,585.20 and 3,451.36

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Solution

The third proportional to 1,585.20 and 3,451.36 is: 7,514.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.20 : 3,451.36 = 3,451.36 : x
  2. Step 2: Convert to fraction form
    1,585.20/3,451.36 = 3,451.36/x
  3. Step 3: Cross multiply
    1,585.20x = 3,451.36 × 3,451.36
  4. Step 4: Simplify right side
    1,585.20x = 11,911,881.54
  5. Step 5: Solve for x
    x = 11,911,881.54/1,585.20
  6. Step 6: Final answer
    x = 7,514.46

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.