Home / 1,755.03-2,420.96-1,115.79

Finding the Fourth Proportional to 1,755.03, 2,420.96 and 1,115.79

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Solution

The fourth proportional to 1,755.03, 2,420.96 and 1,115.79 is: 1,539.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.03 : 2,420.96 = 1,115.79 : x
  2. Step 2: Convert to fraction form
    1,755.03/2,420.96 = 1,115.79/x
  3. Step 3: Cross multiply
    1,755.03x = 2,420.96 × 1,115.79
  4. Step 4: Simplify right side
    1,755.03x = 2,701,277.38
  5. Step 5: Solve for x
    x = 2,701,277.38/1,755.03
  6. Step 6: Final answer
    x = 1,539.16

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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.