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Finding the Third Proportional to 3,386.81 and 4,977.70

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Solution

The third proportional to 3,386.81 and 4,977.70 is: 7,315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.81 : 4,977.70 = 4,977.70 : x
  2. Step 2: Convert to fraction form
    3,386.81/4,977.70 = 4,977.70/x
  3. Step 3: Cross multiply
    3,386.81x = 4,977.70 × 4,977.70
  4. Step 4: Simplify right side
    3,386.81x = 24,777,528.40
  5. Step 5: Solve for x
    x = 24,777,528.40/3,386.81
  6. Step 6: Final answer
    x = 7,315.88

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.