Home / 1,431.36-2,145.51-937.17

Finding the Fourth Proportional to 1,431.36, 2,145.51 and 937.17

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Solution

The fourth proportional to 1,431.36, 2,145.51 and 937.17 is: 1,404.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.36 : 2,145.51 = 937.17 : x
  2. Step 2: Convert to fraction form
    1,431.36/2,145.51 = 937.17/x
  3. Step 3: Cross multiply
    1,431.36x = 2,145.51 × 937.17
  4. Step 4: Simplify right side
    1,431.36x = 2,010,707.61
  5. Step 5: Solve for x
    x = 2,010,707.61/1,431.36
  6. Step 6: Final answer
    x = 1,404.75

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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.