Home / 3,135.51-4,705.29-1,187.69

Finding the Fourth Proportional to 3,135.51, 4,705.29 and 1,187.69

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Solution

The fourth proportional to 3,135.51, 4,705.29 and 1,187.69 is: 1,782.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.51 : 4,705.29 = 1,187.69 : x
  2. Step 2: Convert to fraction form
    3,135.51/4,705.29 = 1,187.69/x
  3. Step 3: Cross multiply
    3,135.51x = 4,705.29 × 1,187.69
  4. Step 4: Simplify right side
    3,135.51x = 5,588,402.35
  5. Step 5: Solve for x
    x = 5,588,402.35/3,135.51
  6. Step 6: Final answer
    x = 1,782.29

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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.