Home / 3,720.93-5,135-2,042.45

Finding the Fourth Proportional to 3,720.93, 5,135 and 2,042.45

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Solution

The fourth proportional to 3,720.93, 5,135 and 2,042.45 is: 2,818.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.93 : 5,135 = 2,042.45 : x
  2. Step 2: Convert to fraction form
    3,720.93/5,135 = 2,042.45/x
  3. Step 3: Cross multiply
    3,720.93x = 5,135 × 2,042.45
  4. Step 4: Simplify right side
    3,720.93x = 10,487,980.75
  5. Step 5: Solve for x
    x = 10,487,980.75/3,720.93
  6. Step 6: Final answer
    x = 2,818.65

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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.