Home / 5,405.80-8,106.27-2,117.20

Finding the Fourth Proportional to 5,405.80, 8,106.27 and 2,117.20

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Solution

The fourth proportional to 5,405.80, 8,106.27 and 2,117.20 is: 3,174.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.80 : 8,106.27 = 2,117.20 : x
  2. Step 2: Convert to fraction form
    5,405.80/8,106.27 = 2,117.20/x
  3. Step 3: Cross multiply
    5,405.80x = 8,106.27 × 2,117.20
  4. Step 4: Simplify right side
    5,405.80x = 17,162,594.84
  5. Step 5: Solve for x
    x = 17,162,594.84/5,405.80
  6. Step 6: Final answer
    x = 3,174.85

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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.