Home / 1,427.10-2,137.82-1,117.51

Finding the Fourth Proportional to 1,427.10, 2,137.82 and 1,117.51

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Solution

The fourth proportional to 1,427.10, 2,137.82 and 1,117.51 is: 1,674.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.10 : 2,137.82 = 1,117.51 : x
  2. Step 2: Convert to fraction form
    1,427.10/2,137.82 = 1,117.51/x
  3. Step 3: Cross multiply
    1,427.10x = 2,137.82 × 1,117.51
  4. Step 4: Simplify right side
    1,427.10x = 2,389,027.22
  5. Step 5: Solve for x
    x = 2,389,027.22/1,427.10
  6. Step 6: Final answer
    x = 1,674.04

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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.