Home / 3,180.34-4,388.85-1,783.12

Finding the Fourth Proportional to 3,180.34, 4,388.85 and 1,783.12

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Solution

The fourth proportional to 3,180.34, 4,388.85 and 1,783.12 is: 2,460.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.34 : 4,388.85 = 1,783.12 : x
  2. Step 2: Convert to fraction form
    3,180.34/4,388.85 = 1,783.12/x
  3. Step 3: Cross multiply
    3,180.34x = 4,388.85 × 1,783.12
  4. Step 4: Simplify right side
    3,180.34x = 7,825,846.21
  5. Step 5: Solve for x
    x = 7,825,846.21/3,180.34
  6. Step 6: Final answer
    x = 2,460.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.