Home / 5,417.20-8,126.79-1,720.36

Finding the Fourth Proportional to 5,417.20, 8,126.79 and 1,720.36

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Solution

The fourth proportional to 5,417.20, 8,126.79 and 1,720.36 is: 2,580.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.20 : 8,126.79 = 1,720.36 : x
  2. Step 2: Convert to fraction form
    5,417.20/8,126.79 = 1,720.36/x
  3. Step 3: Cross multiply
    5,417.20x = 8,126.79 × 1,720.36
  4. Step 4: Simplify right side
    5,417.20x = 13,981,004.44
  5. Step 5: Solve for x
    x = 13,981,004.44/5,417.20
  6. Step 6: Final answer
    x = 2,580.85

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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.