Home / 5,121.19-7,684.76-2,159.45

Finding the Fourth Proportional to 5,121.19, 7,684.76 and 2,159.45

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Solution

The fourth proportional to 5,121.19, 7,684.76 and 2,159.45 is: 3,240.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.19 : 7,684.76 = 2,159.45 : x
  2. Step 2: Convert to fraction form
    5,121.19/7,684.76 = 2,159.45/x
  3. Step 3: Cross multiply
    5,121.19x = 7,684.76 × 2,159.45
  4. Step 4: Simplify right side
    5,121.19x = 16,594,816.56
  5. Step 5: Solve for x
    x = 16,594,816.56/5,121.19
  6. Step 6: Final answer
    x = 3,240.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.