Home / 1,755.15-2,420.73-1,091.76

Finding the Fourth Proportional to 1,755.15, 2,420.73 and 1,091.76

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Solution

The fourth proportional to 1,755.15, 2,420.73 and 1,091.76 is: 1,505.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.15 : 2,420.73 = 1,091.76 : x
  2. Step 2: Convert to fraction form
    1,755.15/2,420.73 = 1,091.76/x
  3. Step 3: Cross multiply
    1,755.15x = 2,420.73 × 1,091.76
  4. Step 4: Simplify right side
    1,755.15x = 2,642,856.18
  5. Step 5: Solve for x
    x = 2,642,856.18/1,755.15
  6. Step 6: Final answer
    x = 1,505.77

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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.