Home / 3,118.24-4,302.96-1,720.80

Finding the Fourth Proportional to 3,118.24, 4,302.96 and 1,720.80

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Solution

The fourth proportional to 3,118.24, 4,302.96 and 1,720.80 is: 2,374.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.24 : 4,302.96 = 1,720.80 : x
  2. Step 2: Convert to fraction form
    3,118.24/4,302.96 = 1,720.80/x
  3. Step 3: Cross multiply
    3,118.24x = 4,302.96 × 1,720.80
  4. Step 4: Simplify right side
    3,118.24x = 7,404,533.57
  5. Step 5: Solve for x
    x = 7,404,533.57/3,118.24
  6. Step 6: Final answer
    x = 2,374.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.