Home / 5,149.51-7,106.31-2,880.86

Finding the Fourth Proportional to 5,149.51, 7,106.31 and 2,880.86

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Solution

The fourth proportional to 5,149.51, 7,106.31 and 2,880.86 is: 3,975.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.51 : 7,106.31 = 2,880.86 : x
  2. Step 2: Convert to fraction form
    5,149.51/7,106.31 = 2,880.86/x
  3. Step 3: Cross multiply
    5,149.51x = 7,106.31 × 2,880.86
  4. Step 4: Simplify right side
    5,149.51x = 20,472,234.29
  5. Step 5: Solve for x
    x = 20,472,234.29/5,149.51
  6. Step 6: Final answer
    x = 3,975.57

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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.