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Finding the Third Proportional to 939.75 and 2,140.88

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Solution

The third proportional to 939.75 and 2,140.88 is: 4,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    939.75 : 2,140.88 = 2,140.88 : x
  2. Step 2: Convert to fraction form
    939.75/2,140.88 = 2,140.88/x
  3. Step 3: Cross multiply
    939.75x = 2,140.88 × 2,140.88
  4. Step 4: Simplify right side
    939.75x = 4,583,345.77
  5. Step 5: Solve for x
    x = 4,583,345.77/939.75
  6. Step 6: Final answer
    x = 4,877.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.