Home / 2,132.40-2,942.40-1,200.84

Finding the Fourth Proportional to 2,132.40, 2,942.40 and 1,200.84

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Solution

The fourth proportional to 2,132.40, 2,942.40 and 1,200.84 is: 1,656.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.40 : 2,942.40 = 1,200.84 : x
  2. Step 2: Convert to fraction form
    2,132.40/2,942.40 = 1,200.84/x
  3. Step 3: Cross multiply
    2,132.40x = 2,942.40 × 1,200.84
  4. Step 4: Simplify right side
    2,132.40x = 3,533,351.62
  5. Step 5: Solve for x
    x = 3,533,351.62/2,132.40
  6. Step 6: Final answer
    x = 1,656.98

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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.