Home / 3,319.04-4,978.43-1,127.79

Finding the Fourth Proportional to 3,319.04, 4,978.43 and 1,127.79

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Solution

The fourth proportional to 3,319.04, 4,978.43 and 1,127.79 is: 1,691.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.04 : 4,978.43 = 1,127.79 : x
  2. Step 2: Convert to fraction form
    3,319.04/4,978.43 = 1,127.79/x
  3. Step 3: Cross multiply
    3,319.04x = 4,978.43 × 1,127.79
  4. Step 4: Simplify right side
    3,319.04x = 5,614,622.16
  5. Step 5: Solve for x
    x = 5,614,622.16/3,319.04
  6. Step 6: Final answer
    x = 1,691.64

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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.