Home / 2,166.60-2,989.92-1,282.22

Finding the Fourth Proportional to 2,166.60, 2,989.92 and 1,282.22

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Solution

The fourth proportional to 2,166.60, 2,989.92 and 1,282.22 is: 1,769.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.60 : 2,989.92 = 1,282.22 : x
  2. Step 2: Convert to fraction form
    2,166.60/2,989.92 = 1,282.22/x
  3. Step 3: Cross multiply
    2,166.60x = 2,989.92 × 1,282.22
  4. Step 4: Simplify right side
    2,166.60x = 3,833,720.27
  5. Step 5: Solve for x
    x = 3,833,720.27/2,166.60
  6. Step 6: Final answer
    x = 1,769.46

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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.