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Finding the Fourth Proportional to 4,889.80, 7,336.07 and 1,605.20

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Solution

The fourth proportional to 4,889.80, 7,336.07 and 1,605.20 is: 2,408.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,889.80 : 7,336.07 = 1,605.20 : x
  2. Step 2: Convert to fraction form
    4,889.80/7,336.07 = 1,605.20/x
  3. Step 3: Cross multiply
    4,889.80x = 7,336.07 × 1,605.20
  4. Step 4: Simplify right side
    4,889.80x = 11,775,841.59
  5. Step 5: Solve for x
    x = 11,775,841.59/4,889.80
  6. Step 6: Final answer
    x = 2,408.25

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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.