Home / 1,471.35-2,018.36-1,391.91

Finding the Fourth Proportional to 1,471.35, 2,018.36 and 1,391.91

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Solution

The fourth proportional to 1,471.35, 2,018.36 and 1,391.91 is: 1,909.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.35 : 2,018.36 = 1,391.91 : x
  2. Step 2: Convert to fraction form
    1,471.35/2,018.36 = 1,391.91/x
  3. Step 3: Cross multiply
    1,471.35x = 2,018.36 × 1,391.91
  4. Step 4: Simplify right side
    1,471.35x = 2,809,375.47
  5. Step 5: Solve for x
    x = 2,809,375.47/1,471.35
  6. Step 6: Final answer
    x = 1,909.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.