Home / 1,720.12-2,583.60-1,661.80

Finding the Fourth Proportional to 1,720.12, 2,583.60 and 1,661.80

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Solution

The fourth proportional to 1,720.12, 2,583.60 and 1,661.80 is: 2,496.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.12 : 2,583.60 = 1,661.80 : x
  2. Step 2: Convert to fraction form
    1,720.12/2,583.60 = 1,661.80/x
  3. Step 3: Cross multiply
    1,720.12x = 2,583.60 × 1,661.80
  4. Step 4: Simplify right side
    1,720.12x = 4,293,426.48
  5. Step 5: Solve for x
    x = 4,293,426.48/1,720.12
  6. Step 6: Final answer
    x = 2,496.00

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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.