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Finding the Fourth Proportional to 1,682.40, 2,522.46 and 859.08

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Solution

The fourth proportional to 1,682.40, 2,522.46 and 859.08 is: 1,288.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.40 : 2,522.46 = 859.08 : x
  2. Step 2: Convert to fraction form
    1,682.40/2,522.46 = 859.08/x
  3. Step 3: Cross multiply
    1,682.40x = 2,522.46 × 859.08
  4. Step 4: Simplify right side
    1,682.40x = 2,166,994.94
  5. Step 5: Solve for x
    x = 2,166,994.94/1,682.40
  6. Step 6: Final answer
    x = 1,288.04

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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.