Home / 3,318.28-4,975.98-1,126.42

Finding the Fourth Proportional to 3,318.28, 4,975.98 and 1,126.42

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Solution

The fourth proportional to 3,318.28, 4,975.98 and 1,126.42 is: 1,689.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.28 : 4,975.98 = 1,126.42 : x
  2. Step 2: Convert to fraction form
    3,318.28/4,975.98 = 1,126.42/x
  3. Step 3: Cross multiply
    3,318.28x = 4,975.98 × 1,126.42
  4. Step 4: Simplify right side
    3,318.28x = 5,605,043.39
  5. Step 5: Solve for x
    x = 5,605,043.39/3,318.28
  6. Step 6: Final answer
    x = 1,689.14

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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.