Home / 2,140.35-3,206.40-1,150.74

Finding the Fourth Proportional to 2,140.35, 3,206.40 and 1,150.74

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Solution

The fourth proportional to 2,140.35, 3,206.40 and 1,150.74 is: 1,723.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.35 : 3,206.40 = 1,150.74 : x
  2. Step 2: Convert to fraction form
    2,140.35/3,206.40 = 1,150.74/x
  3. Step 3: Cross multiply
    2,140.35x = 3,206.40 × 1,150.74
  4. Step 4: Simplify right side
    2,140.35x = 3,689,732.74
  5. Step 5: Solve for x
    x = 3,689,732.74/2,140.35
  6. Step 6: Final answer
    x = 1,723.89

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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.