Home / 2,178.20-3,260.10-1,783.64

Finding the Fourth Proportional to 2,178.20, 3,260.10 and 1,783.64

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Solution

The fourth proportional to 2,178.20, 3,260.10 and 1,783.64 is: 2,669.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.20 : 3,260.10 = 1,783.64 : x
  2. Step 2: Convert to fraction form
    2,178.20/3,260.10 = 1,783.64/x
  3. Step 3: Cross multiply
    2,178.20x = 3,260.10 × 1,783.64
  4. Step 4: Simplify right side
    2,178.20x = 5,814,844.76
  5. Step 5: Solve for x
    x = 5,814,844.76/2,178.20
  6. Step 6: Final answer
    x = 2,669.56

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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.