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Finding the Fourth Proportional to 5,100.32, 7,650.48 and 1,640.00

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Solution

The fourth proportional to 5,100.32, 7,650.48 and 1,640.00 is: 2,459.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100.32 : 7,650.48 = 1,640.00 : x
  2. Step 2: Convert to fraction form
    5,100.32/7,650.48 = 1,640.00/x
  3. Step 3: Cross multiply
    5,100.32x = 7,650.48 × 1,640.00
  4. Step 4: Simplify right side
    5,100.32x = 12,546,748.95
  5. Step 5: Solve for x
    x = 12,546,748.95/5,100.32
  6. Step 6: Final answer
    x = 2,459.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.