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Finding the Third Proportional to 7,528 and 8,128

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Solution

The third proportional to 7,528 and 8,128 is: 8,775.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,528 : 8,128 = 8,128 : x
  2. Step 2: Convert to fraction form
    7,528/8,128 = 8,128/x
  3. Step 3: Cross multiply
    7,528x = 8,128 × 8,128
  4. Step 4: Simplify right side
    7,528x = 66,064,384
  5. Step 5: Solve for x
    x = 66,064,384/7,528
  6. Step 6: Final answer
    x = 8,775.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.