Home / 1,032.09-1,424.37-639.35

Finding the Fourth Proportional to 1,032.09, 1,424.37 and 639.35

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Solution

The fourth proportional to 1,032.09, 1,424.37 and 639.35 is: 882.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032.09 : 1,424.37 = 639.35 : x
  2. Step 2: Convert to fraction form
    1,032.09/1,424.37 = 639.35/x
  3. Step 3: Cross multiply
    1,032.09x = 1,424.37 × 639.35
  4. Step 4: Simplify right side
    1,032.09x = 910,663.84
  5. Step 5: Solve for x
    x = 910,663.84/1,032.09
  6. Step 6: Final answer
    x = 882.35

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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.