Home / 2,190.57-3,280.52-1,151.45

Finding the Fourth Proportional to 2,190.57, 3,280.52 and 1,151.45

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Solution

The fourth proportional to 2,190.57, 3,280.52 and 1,151.45 is: 1,724.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.57 : 3,280.52 = 1,151.45 : x
  2. Step 2: Convert to fraction form
    2,190.57/3,280.52 = 1,151.45/x
  3. Step 3: Cross multiply
    2,190.57x = 3,280.52 × 1,151.45
  4. Step 4: Simplify right side
    2,190.57x = 3,777,332.59
  5. Step 5: Solve for x
    x = 3,777,332.59/2,190.57
  6. Step 6: Final answer
    x = 1,724.36

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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.