Home / 1,032.24-1,423.77-639.03

Finding the Fourth Proportional to 1,032.24, 1,423.77 and 639.03

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Solution

The fourth proportional to 1,032.24, 1,423.77 and 639.03 is: 881.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032.24 : 1,423.77 = 639.03 : x
  2. Step 2: Convert to fraction form
    1,032.24/1,423.77 = 639.03/x
  3. Step 3: Cross multiply
    1,032.24x = 1,423.77 × 639.03
  4. Step 4: Simplify right side
    1,032.24x = 909,831.74
  5. Step 5: Solve for x
    x = 909,831.74/1,032.24
  6. Step 6: Final answer
    x = 881.41

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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.