Home / 3,420.43-5,131.28-1,199.14

Finding the Fourth Proportional to 3,420.43, 5,131.28 and 1,199.14

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Solution

The fourth proportional to 3,420.43, 5,131.28 and 1,199.14 is: 1,798.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.43 : 5,131.28 = 1,199.14 : x
  2. Step 2: Convert to fraction form
    3,420.43/5,131.28 = 1,199.14/x
  3. Step 3: Cross multiply
    3,420.43x = 5,131.28 × 1,199.14
  4. Step 4: Simplify right side
    3,420.43x = 6,153,113.27
  5. Step 5: Solve for x
    x = 6,153,113.27/3,420.43
  6. Step 6: Final answer
    x = 1,798.93

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1.5x scale

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.