Home / 1,327.17-1,991.64-1,316.91

Finding the Fourth Proportional to 1,327.17, 1,991.64 and 1,316.91

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Solution

The fourth proportional to 1,327.17, 1,991.64 and 1,316.91 is: 1,976.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.17 : 1,991.64 = 1,316.91 : x
  2. Step 2: Convert to fraction form
    1,327.17/1,991.64 = 1,316.91/x
  3. Step 3: Cross multiply
    1,327.17x = 1,991.64 × 1,316.91
  4. Step 4: Simplify right side
    1,327.17x = 2,622,810.63
  5. Step 5: Solve for x
    x = 2,622,810.63/1,327.17
  6. Step 6: Final answer
    x = 1,976.24

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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.