Home / 3,305.35-4,561.52-1,978.80

Finding the Fourth Proportional to 3,305.35, 4,561.52 and 1,978.80

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Solution

The fourth proportional to 3,305.35, 4,561.52 and 1,978.80 is: 2,730.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,305.35 : 4,561.52 = 1,978.80 : x
  2. Step 2: Convert to fraction form
    3,305.35/4,561.52 = 1,978.80/x
  3. Step 3: Cross multiply
    3,305.35x = 4,561.52 × 1,978.80
  4. Step 4: Simplify right side
    3,305.35x = 9,026,312.97
  5. Step 5: Solve for x
    x = 9,026,312.97/3,305.35
  6. Step 6: Final answer
    x = 2,730.82

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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.