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Finding the Fourth Proportional to 5,100.45, 7,652.48 and 4,920.45

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Solution

The fourth proportional to 5,100.45, 7,652.48 and 4,920.45 is: 7,382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100.45 : 7,652.48 = 4,920.45 : x
  2. Step 2: Convert to fraction form
    5,100.45/7,652.48 = 4,920.45/x
  3. Step 3: Cross multiply
    5,100.45x = 7,652.48 × 4,920.45
  4. Step 4: Simplify right side
    5,100.45x = 37,653,620.61
  5. Step 5: Solve for x
    x = 37,653,620.61/5,100.45
  6. Step 6: Final answer
    x = 7,382.41

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1.5x scale

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.