Home / 1,431.87-2,138.36-1,237.26

Finding the Fourth Proportional to 1,431.87, 2,138.36 and 1,237.26

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Solution

The fourth proportional to 1,431.87, 2,138.36 and 1,237.26 is: 1,847.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.87 : 2,138.36 = 1,237.26 : x
  2. Step 2: Convert to fraction form
    1,431.87/2,138.36 = 1,237.26/x
  3. Step 3: Cross multiply
    1,431.87x = 2,138.36 × 1,237.26
  4. Step 4: Simplify right side
    1,431.87x = 2,645,701.11
  5. Step 5: Solve for x
    x = 2,645,701.11/1,431.87
  6. Step 6: Final answer
    x = 1,847.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.