Home / 4,187.36-6,275.88-1,720.64

Finding the Fourth Proportional to 4,187.36, 6,275.88 and 1,720.64

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Solution

The fourth proportional to 4,187.36, 6,275.88 and 1,720.64 is: 2,578.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.36 : 6,275.88 = 1,720.64 : x
  2. Step 2: Convert to fraction form
    4,187.36/6,275.88 = 1,720.64/x
  3. Step 3: Cross multiply
    4,187.36x = 6,275.88 × 1,720.64
  4. Step 4: Simplify right side
    4,187.36x = 10,798,530.16
  5. Step 5: Solve for x
    x = 10,798,530.16/4,187.36
  6. Step 6: Final answer
    x = 2,578.84

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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.