Home / 5,160.86-7,121.82-2,802.98

Finding the Fourth Proportional to 5,160.86, 7,121.82 and 2,802.98

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Solution

The fourth proportional to 5,160.86, 7,121.82 and 2,802.98 is: 3,868.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.86 : 7,121.82 = 2,802.98 : x
  2. Step 2: Convert to fraction form
    5,160.86/7,121.82 = 2,802.98/x
  3. Step 3: Cross multiply
    5,160.86x = 7,121.82 × 2,802.98
  4. Step 4: Simplify right side
    5,160.86x = 19,962,319.02
  5. Step 5: Solve for x
    x = 19,962,319.02/5,160.86
  6. Step 6: Final answer
    x = 3,868.02

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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.