Home / 5,406.16-8,105.58-2,117.20

Finding the Fourth Proportional to 5,406.16, 8,105.58 and 2,117.20

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Solution

The fourth proportional to 5,406.16, 8,105.58 and 2,117.20 is: 3,174.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,406.16 : 8,105.58 = 2,117.20 : x
  2. Step 2: Convert to fraction form
    5,406.16/8,105.58 = 2,117.20/x
  3. Step 3: Cross multiply
    5,406.16x = 8,105.58 × 2,117.20
  4. Step 4: Simplify right side
    5,406.16x = 17,161,133.98
  5. Step 5: Solve for x
    x = 17,161,133.98/5,406.16
  6. Step 6: Final answer
    x = 3,174.37

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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.