Home / 2,134.60-2,945.77-1,190.45

Finding the Fourth Proportional to 2,134.60, 2,945.77 and 1,190.45

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Solution

The fourth proportional to 2,134.60, 2,945.77 and 1,190.45 is: 1,642.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,134.60 : 2,945.77 = 1,190.45 : x
  2. Step 2: Convert to fraction form
    2,134.60/2,945.77 = 1,190.45/x
  3. Step 3: Cross multiply
    2,134.60x = 2,945.77 × 1,190.45
  4. Step 4: Simplify right side
    2,134.60x = 3,506,785.94
  5. Step 5: Solve for x
    x = 3,506,785.94/2,134.60
  6. Step 6: Final answer
    x = 1,642.83

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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.