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Finding the Fourth Proportional to 4,397.95, 6,589.98 and 1,620.80

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Solution

The fourth proportional to 4,397.95, 6,589.98 and 1,620.80 is: 2,428.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,397.95 : 6,589.98 = 1,620.80 : x
  2. Step 2: Convert to fraction form
    4,397.95/6,589.98 = 1,620.80/x
  3. Step 3: Cross multiply
    4,397.95x = 6,589.98 × 1,620.80
  4. Step 4: Simplify right side
    4,397.95x = 10,681,006.63
  5. Step 5: Solve for x
    x = 10,681,006.63/4,397.95
  6. Step 6: Final answer
    x = 2,428.63

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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.