Home / 5,146.17-7,720.34-1,983.69

Finding the Fourth Proportional to 5,146.17, 7,720.34 and 1,983.69

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Solution

The fourth proportional to 5,146.17, 7,720.34 and 1,983.69 is: 2,975.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.17 : 7,720.34 = 1,983.69 : x
  2. Step 2: Convert to fraction form
    5,146.17/7,720.34 = 1,983.69/x
  3. Step 3: Cross multiply
    5,146.17x = 7,720.34 × 1,983.69
  4. Step 4: Simplify right side
    5,146.17x = 15,314,740.78
  5. Step 5: Solve for x
    x = 15,314,740.78/5,146.17
  6. Step 6: Final answer
    x = 2,975.95

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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.