Home / 2,190.36-3,281.20-1,265.34

Finding the Fourth Proportional to 2,190.36, 3,281.20 and 1,265.34

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Solution

The fourth proportional to 2,190.36, 3,281.20 and 1,265.34 is: 1,895.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.36 : 3,281.20 = 1,265.34 : x
  2. Step 2: Convert to fraction form
    2,190.36/3,281.20 = 1,265.34/x
  3. Step 3: Cross multiply
    2,190.36x = 3,281.20 × 1,265.34
  4. Step 4: Simplify right side
    2,190.36x = 4,151,833.61
  5. Step 5: Solve for x
    x = 4,151,833.61/2,190.36
  6. Step 6: Final answer
    x = 1,895.50

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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.