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Finding the Third Proportional to 4,590 and 7,390.50

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Solution

The third proportional to 4,590 and 7,390.50 is: 11,899.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,590 : 7,390.50 = 7,390.50 : x
  2. Step 2: Convert to fraction form
    4,590/7,390.50 = 7,390.50/x
  3. Step 3: Cross multiply
    4,590x = 7,390.50 × 7,390.50
  4. Step 4: Simplify right side
    4,590x = 54,619,490.25
  5. Step 5: Solve for x
    x = 54,619,490.25/4,590
  6. Step 6: Final answer
    x = 11,899.67

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.