Home / 4,187.35-6,279.58-1,720.90

Finding the Fourth Proportional to 4,187.35, 6,279.58 and 1,720.90

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Solution

The fourth proportional to 4,187.35, 6,279.58 and 1,720.90 is: 2,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.35 : 6,279.58 = 1,720.90 : x
  2. Step 2: Convert to fraction form
    4,187.35/6,279.58 = 1,720.90/x
  3. Step 3: Cross multiply
    4,187.35x = 6,279.58 × 1,720.90
  4. Step 4: Simplify right side
    4,187.35x = 10,806,494.22
  5. Step 5: Solve for x
    x = 10,806,494.22/4,187.35
  6. Step 6: Final answer
    x = 2,580.75

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1.5x scale

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.