Home / 2,167.95-2,991.75-1,173.21

Finding the Fourth Proportional to 2,167.95, 2,991.75 and 1,173.21

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Solution

The fourth proportional to 2,167.95, 2,991.75 and 1,173.21 is: 1,619.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.95 : 2,991.75 = 1,173.21 : x
  2. Step 2: Convert to fraction form
    2,167.95/2,991.75 = 1,173.21/x
  3. Step 3: Cross multiply
    2,167.95x = 2,991.75 × 1,173.21
  4. Step 4: Simplify right side
    2,167.95x = 3,509,958.50
  5. Step 5: Solve for x
    x = 3,509,958.50/2,167.95
  6. Step 6: Final answer
    x = 1,619.02

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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.