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Finding the Fourth Proportional to 4,985, 7,458.68 and 2,976.26

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Solution

The fourth proportional to 4,985, 7,458.68 and 2,976.26 is: 4,453.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985 : 7,458.68 = 2,976.26 : x
  2. Step 2: Convert to fraction form
    4,985/7,458.68 = 2,976.26/x
  3. Step 3: Cross multiply
    4,985x = 7,458.68 × 2,976.26
  4. Step 4: Simplify right side
    4,985x = 22,198,970.94
  5. Step 5: Solve for x
    x = 22,198,970.94/4,985
  6. Step 6: Final answer
    x = 4,453.15

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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.