Home / 3,440-5,160.90-1,131.50

Finding the Fourth Proportional to 3,440, 5,160.90 and 1,131.50

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Solution

The fourth proportional to 3,440, 5,160.90 and 1,131.50 is: 1,697.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440 : 5,160.90 = 1,131.50 : x
  2. Step 2: Convert to fraction form
    3,440/5,160.90 = 1,131.50/x
  3. Step 3: Cross multiply
    3,440x = 5,160.90 × 1,131.50
  4. Step 4: Simplify right side
    3,440x = 5,839,558.35
  5. Step 5: Solve for x
    x = 5,839,558.35/3,440
  6. Step 6: Final answer
    x = 1,697.55

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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.