Home / 5,172.12-7,758.28-1,474.45

Finding the Fourth Proportional to 5,172.12, 7,758.28 and 1,474.45

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Solution

The fourth proportional to 5,172.12, 7,758.28 and 1,474.45 is: 2,211.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.12 : 7,758.28 = 1,474.45 : x
  2. Step 2: Convert to fraction form
    5,172.12/7,758.28 = 1,474.45/x
  3. Step 3: Cross multiply
    5,172.12x = 7,758.28 × 1,474.45
  4. Step 4: Simplify right side
    5,172.12x = 11,439,178.39
  5. Step 5: Solve for x
    x = 11,439,178.39/5,172.12
  6. Step 6: Final answer
    x = 2,211.70

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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.