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Finding the Third Proportional to 1,335 and 1,866.50

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Solution

The third proportional to 1,335 and 1,866.50 is: 2,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335 : 1,866.50 = 1,866.50 : x
  2. Step 2: Convert to fraction form
    1,335/1,866.50 = 1,866.50/x
  3. Step 3: Cross multiply
    1,335x = 1,866.50 × 1,866.50
  4. Step 4: Simplify right side
    1,335x = 3,483,822.25
  5. Step 5: Solve for x
    x = 3,483,822.25/1,335
  6. Step 6: Final answer
    x = 2,609.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.