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Finding the Third Proportional to 1,490 and 2,612

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Solution

The third proportional to 1,490 and 2,612 is: 4,578.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490 : 2,612 = 2,612 : x
  2. Step 2: Convert to fraction form
    1,490/2,612 = 2,612/x
  3. Step 3: Cross multiply
    1,490x = 2,612 × 2,612
  4. Step 4: Simplify right side
    1,490x = 6,822,544
  5. Step 5: Solve for x
    x = 6,822,544/1,490
  6. Step 6: Final answer
    x = 4,578.89

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Why These Related Problems?

These problems maintain the same ratio (1.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.