Home / 1,788.58-2,682.46-490.15

Finding the Fourth Proportional to 1,788.58, 2,682.46 and 490.15

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Solution

The fourth proportional to 1,788.58, 2,682.46 and 490.15 is: 735.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.58 : 2,682.46 = 490.15 : x
  2. Step 2: Convert to fraction form
    1,788.58/2,682.46 = 490.15/x
  3. Step 3: Cross multiply
    1,788.58x = 2,682.46 × 490.15
  4. Step 4: Simplify right side
    1,788.58x = 1,314,807.77
  5. Step 5: Solve for x
    x = 1,314,807.77/1,788.58
  6. Step 6: Final answer
    x = 735.11

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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.