Home / 3,191.25-4,403.98-1,775.05

Finding the Fourth Proportional to 3,191.25, 4,403.98 and 1,775.05

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Solution

The fourth proportional to 3,191.25, 4,403.98 and 1,775.05 is: 2,449.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.25 : 4,403.98 = 1,775.05 : x
  2. Step 2: Convert to fraction form
    3,191.25/4,403.98 = 1,775.05/x
  3. Step 3: Cross multiply
    3,191.25x = 4,403.98 × 1,775.05
  4. Step 4: Simplify right side
    3,191.25x = 7,817,284.70
  5. Step 5: Solve for x
    x = 7,817,284.70/3,191.25
  6. Step 6: Final answer
    x = 2,449.60

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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.