Home / 1,356.51-2,034.76-1,287.26

Finding the Fourth Proportional to 1,356.51, 2,034.76 and 1,287.26

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Solution

The fourth proportional to 1,356.51, 2,034.76 and 1,287.26 is: 1,930.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.51 : 2,034.76 = 1,287.26 : x
  2. Step 2: Convert to fraction form
    1,356.51/2,034.76 = 1,287.26/x
  3. Step 3: Cross multiply
    1,356.51x = 2,034.76 × 1,287.26
  4. Step 4: Simplify right side
    1,356.51x = 2,619,254.98
  5. Step 5: Solve for x
    x = 2,619,254.98/1,356.51
  6. Step 6: Final answer
    x = 1,930.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.