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Finding the Fourth Proportional to 3,599.70, 5,396.55 and 1,521.30

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Solution

The fourth proportional to 3,599.70, 5,396.55 and 1,521.30 is: 2,280.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,599.70 : 5,396.55 = 1,521.30 : x
  2. Step 2: Convert to fraction form
    3,599.70/5,396.55 = 1,521.30/x
  3. Step 3: Cross multiply
    3,599.70x = 5,396.55 × 1,521.30
  4. Step 4: Simplify right side
    3,599.70x = 8,209,771.52
  5. Step 5: Solve for x
    x = 8,209,771.52/3,599.70
  6. Step 6: Final answer
    x = 2,280.68

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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.