Home / 5,151.47-7,109.32-2,913.55

Finding the Fourth Proportional to 5,151.47, 7,109.32 and 2,913.55

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Solution

The fourth proportional to 5,151.47, 7,109.32 and 2,913.55 is: 4,020.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.47 : 7,109.32 = 2,913.55 : x
  2. Step 2: Convert to fraction form
    5,151.47/7,109.32 = 2,913.55/x
  3. Step 3: Cross multiply
    5,151.47x = 7,109.32 × 2,913.55
  4. Step 4: Simplify right side
    5,151.47x = 20,713,379.68
  5. Step 5: Solve for x
    x = 20,713,379.68/5,151.47
  6. Step 6: Final answer
    x = 4,020.87

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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.