Home / 2,780.25-4,171.59-1,742.63

Finding the Fourth Proportional to 2,780.25, 4,171.59 and 1,742.63

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Solution

The fourth proportional to 2,780.25, 4,171.59 and 1,742.63 is: 2,614.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.25 : 4,171.59 = 1,742.63 : x
  2. Step 2: Convert to fraction form
    2,780.25/4,171.59 = 1,742.63/x
  3. Step 3: Cross multiply
    2,780.25x = 4,171.59 × 1,742.63
  4. Step 4: Simplify right side
    2,780.25x = 7,269,529.17
  5. Step 5: Solve for x
    x = 7,269,529.17/2,780.25
  6. Step 6: Final answer
    x = 2,614.70

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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.