Home / 1,272.64-1,755.58-1,106.48

Finding the Fourth Proportional to 1,272.64, 1,755.58 and 1,106.48

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Solution

The fourth proportional to 1,272.64, 1,755.58 and 1,106.48 is: 1,526.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.64 : 1,755.58 = 1,106.48 : x
  2. Step 2: Convert to fraction form
    1,272.64/1,755.58 = 1,106.48/x
  3. Step 3: Cross multiply
    1,272.64x = 1,755.58 × 1,106.48
  4. Step 4: Simplify right side
    1,272.64x = 1,942,514.16
  5. Step 5: Solve for x
    x = 1,942,514.16/1,272.64
  6. Step 6: Final answer
    x = 1,526.37

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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.