Home / 2,134.76-2,945.38-1,378.22

Finding the Fourth Proportional to 2,134.76, 2,945.38 and 1,378.22

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Solution

The fourth proportional to 2,134.76, 2,945.38 and 1,378.22 is: 1,901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,134.76 : 2,945.38 = 1,378.22 : x
  2. Step 2: Convert to fraction form
    2,134.76/2,945.38 = 1,378.22/x
  3. Step 3: Cross multiply
    2,134.76x = 2,945.38 × 1,378.22
  4. Step 4: Simplify right side
    2,134.76x = 4,059,381.62
  5. Step 5: Solve for x
    x = 4,059,381.62/2,134.76
  6. Step 6: Final answer
    x = 1,901.56

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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.