Home / 3,128.49-4,695.75-1,486.13

Finding the Fourth Proportional to 3,128.49, 4,695.75 and 1,486.13

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Solution

The fourth proportional to 3,128.49, 4,695.75 and 1,486.13 is: 2,230.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.49 : 4,695.75 = 1,486.13 : x
  2. Step 2: Convert to fraction form
    3,128.49/4,695.75 = 1,486.13/x
  3. Step 3: Cross multiply
    3,128.49x = 4,695.75 × 1,486.13
  4. Step 4: Simplify right side
    3,128.49x = 6,978,471.47
  5. Step 5: Solve for x
    x = 6,978,471.47/3,128.49
  6. Step 6: Final answer
    x = 2,230.62

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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.