Home / 5,160.78-7,121.93-3,064.50

Finding the Fourth Proportional to 5,160.78, 7,121.93 and 3,064.50

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Solution

The fourth proportional to 5,160.78, 7,121.93 and 3,064.50 is: 4,229.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.78 : 7,121.93 = 3,064.50 : x
  2. Step 2: Convert to fraction form
    5,160.78/7,121.93 = 3,064.50/x
  3. Step 3: Cross multiply
    5,160.78x = 7,121.93 × 3,064.50
  4. Step 4: Simplify right side
    5,160.78x = 21,825,139.16
  5. Step 5: Solve for x
    x = 21,825,139.16/5,160.78
  6. Step 6: Final answer
    x = 4,229.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.