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Finding the Third Proportional to 7,880 and 8,612

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Solution

The third proportional to 7,880 and 8,612 is: 9,412.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880 : 8,612 = 8,612 : x
  2. Step 2: Convert to fraction form
    7,880/8,612 = 8,612/x
  3. Step 3: Cross multiply
    7,880x = 8,612 × 8,612
  4. Step 4: Simplify right side
    7,880x = 74,166,544
  5. Step 5: Solve for x
    x = 74,166,544/7,880
  6. Step 6: Final answer
    x = 9,412.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.