Home / 3,180.30-4,388.86-1,783.06

Finding the Fourth Proportional to 3,180.30, 4,388.86 and 1,783.06

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Solution

The fourth proportional to 3,180.30, 4,388.86 and 1,783.06 is: 2,460.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.30 : 4,388.86 = 1,783.06 : x
  2. Step 2: Convert to fraction form
    3,180.30/4,388.86 = 1,783.06/x
  3. Step 3: Cross multiply
    3,180.30x = 4,388.86 × 1,783.06
  4. Step 4: Simplify right side
    3,180.30x = 7,825,600.71
  5. Step 5: Solve for x
    x = 7,825,600.71/3,180.30
  6. Step 6: Final answer
    x = 2,460.65

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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.