Home / 1,160.60-1,739.27-640.84

Finding the Fourth Proportional to 1,160.60, 1,739.27 and 640.84

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Solution

The fourth proportional to 1,160.60, 1,739.27 and 640.84 is: 960.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160.60 : 1,739.27 = 640.84 : x
  2. Step 2: Convert to fraction form
    1,160.60/1,739.27 = 640.84/x
  3. Step 3: Cross multiply
    1,160.60x = 1,739.27 × 640.84
  4. Step 4: Simplify right side
    1,160.60x = 1,114,593.79
  5. Step 5: Solve for x
    x = 1,114,593.79/1,160.60
  6. Step 6: Final answer
    x = 960.36

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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.