Home / 3,128.34-4,691.14-1,485.35

Finding the Fourth Proportional to 3,128.34, 4,691.14 and 1,485.35

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Solution

The fourth proportional to 3,128.34, 4,691.14 and 1,485.35 is: 2,227.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.34 : 4,691.14 = 1,485.35 : x
  2. Step 2: Convert to fraction form
    3,128.34/4,691.14 = 1,485.35/x
  3. Step 3: Cross multiply
    3,128.34x = 4,691.14 × 1,485.35
  4. Step 4: Simplify right side
    3,128.34x = 6,968,005.79
  5. Step 5: Solve for x
    x = 6,968,005.79/3,128.34
  6. Step 6: Final answer
    x = 2,227.38

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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.