Home / 5,151.79-7,109.43-2,883.13

Finding the Fourth Proportional to 5,151.79, 7,109.43 and 2,883.13

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Solution

The fourth proportional to 5,151.79, 7,109.43 and 2,883.13 is: 3,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.79 : 7,109.43 = 2,883.13 : x
  2. Step 2: Convert to fraction form
    5,151.79/7,109.43 = 2,883.13/x
  3. Step 3: Cross multiply
    5,151.79x = 7,109.43 × 2,883.13
  4. Step 4: Simplify right side
    5,151.79x = 20,497,446.65
  5. Step 5: Solve for x
    x = 20,497,446.65/5,151.79
  6. Step 6: Final answer
    x = 3,978.70

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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.