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Finding the Third Proportional to 2,178 and 4,776

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Solution

The third proportional to 2,178 and 4,776 is: 10,472.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178 : 4,776 = 4,776 : x
  2. Step 2: Convert to fraction form
    2,178/4,776 = 4,776/x
  3. Step 3: Cross multiply
    2,178x = 4,776 × 4,776
  4. Step 4: Simplify right side
    2,178x = 22,810,176
  5. Step 5: Solve for x
    x = 22,810,176/2,178
  6. Step 6: Final answer
    x = 10,472.99

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.