Home / 1,356.48-1,872.26-1,135.05

Finding the Fourth Proportional to 1,356.48, 1,872.26 and 1,135.05

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Solution

The fourth proportional to 1,356.48, 1,872.26 and 1,135.05 is: 1,566.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.48 : 1,872.26 = 1,135.05 : x
  2. Step 2: Convert to fraction form
    1,356.48/1,872.26 = 1,135.05/x
  3. Step 3: Cross multiply
    1,356.48x = 1,872.26 × 1,135.05
  4. Step 4: Simplify right side
    1,356.48x = 2,125,103.04
  5. Step 5: Solve for x
    x = 2,125,103.04/1,356.48
  6. Step 6: Final answer
    x = 1,566.63

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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.