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Finding the Third Proportional to 985.63 and 2,137.88

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Solution

The third proportional to 985.63 and 2,137.88 is: 4,637.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    985.63 : 2,137.88 = 2,137.88 : x
  2. Step 2: Convert to fraction form
    985.63/2,137.88 = 2,137.88/x
  3. Step 3: Cross multiply
    985.63x = 2,137.88 × 2,137.88
  4. Step 4: Simplify right side
    985.63x = 4,570,509.52
  5. Step 5: Solve for x
    x = 4,570,509.52/985.63
  6. Step 6: Final answer
    x = 4,637.17

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.