Home / 1,755.36-2,635.20-1,108.80

Finding the Fourth Proportional to 1,755.36, 2,635.20 and 1,108.80

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Solution

The fourth proportional to 1,755.36, 2,635.20 and 1,108.80 is: 1,664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.36 : 2,635.20 = 1,108.80 : x
  2. Step 2: Convert to fraction form
    1,755.36/2,635.20 = 1,108.80/x
  3. Step 3: Cross multiply
    1,755.36x = 2,635.20 × 1,108.80
  4. Step 4: Simplify right side
    1,755.36x = 2,921,909.76
  5. Step 5: Solve for x
    x = 2,921,909.76/1,755.36
  6. Step 6: Final answer
    x = 1,664.56

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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.