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Finding the Fourth Proportional to 2,589.21, 3,588.21 and 2,539.98

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Solution

The fourth proportional to 2,589.21, 3,588.21 and 2,539.98 is: 3,519.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.21 : 3,588.21 = 2,539.98 : x
  2. Step 2: Convert to fraction form
    2,589.21/3,588.21 = 2,539.98/x
  3. Step 3: Cross multiply
    2,589.21x = 3,588.21 × 2,539.98
  4. Step 4: Simplify right side
    2,589.21x = 9,113,981.64
  5. Step 5: Solve for x
    x = 9,113,981.64/2,589.21
  6. Step 6: Final answer
    x = 3,519.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.