Home / 1,720.60-2,583.30-1,355.80

Finding the Fourth Proportional to 1,720.60, 2,583.30 and 1,355.80

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Solution

The fourth proportional to 1,720.60, 2,583.30 and 1,355.80 is: 2,035.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.60 : 2,583.30 = 1,355.80 : x
  2. Step 2: Convert to fraction form
    1,720.60/2,583.30 = 1,355.80/x
  3. Step 3: Cross multiply
    1,720.60x = 2,583.30 × 1,355.80
  4. Step 4: Simplify right side
    1,720.60x = 3,502,438.14
  5. Step 5: Solve for x
    x = 3,502,438.14/1,720.60
  6. Step 6: Final answer
    x = 2,035.59

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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.