Home / 1,031.03-1,422.41-637.37

Finding the Fourth Proportional to 1,031.03, 1,422.41 and 637.37

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Solution

The fourth proportional to 1,031.03, 1,422.41 and 637.37 is: 879.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.03 : 1,422.41 = 637.37 : x
  2. Step 2: Convert to fraction form
    1,031.03/1,422.41 = 637.37/x
  3. Step 3: Cross multiply
    1,031.03x = 1,422.41 × 637.37
  4. Step 4: Simplify right side
    1,031.03x = 906,595.94
  5. Step 5: Solve for x
    x = 906,595.94/1,031.03
  6. Step 6: Final answer
    x = 879.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.