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Finding the Fourth Proportional to 1,682.88, 2,520.99 and 1,154.49

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Solution

The fourth proportional to 1,682.88, 2,520.99 and 1,154.49 is: 1,729.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.88 : 2,520.99 = 1,154.49 : x
  2. Step 2: Convert to fraction form
    1,682.88/2,520.99 = 1,154.49/x
  3. Step 3: Cross multiply
    1,682.88x = 2,520.99 × 1,154.49
  4. Step 4: Simplify right side
    1,682.88x = 2,910,457.75
  5. Step 5: Solve for x
    x = 2,910,457.75/1,682.88
  6. Step 6: Final answer
    x = 1,729.45

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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.