Home / 5,151.96-7,109.62-2,913.76

Finding the Fourth Proportional to 5,151.96, 7,109.62 and 2,913.76

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Solution

The fourth proportional to 5,151.96, 7,109.62 and 2,913.76 is: 4,020.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.96 : 7,109.62 = 2,913.76 : x
  2. Step 2: Convert to fraction form
    5,151.96/7,109.62 = 2,913.76/x
  3. Step 3: Cross multiply
    5,151.96x = 7,109.62 × 2,913.76
  4. Step 4: Simplify right side
    5,151.96x = 20,715,726.37
  5. Step 5: Solve for x
    x = 20,715,726.37/5,151.96
  6. Step 6: Final answer
    x = 4,020.94

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1.5x scale

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.