Home / 5,619.10-8,429.91-1,921.09

Finding the Fourth Proportional to 5,619.10, 8,429.91 and 1,921.09

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Solution

The fourth proportional to 5,619.10, 8,429.91 and 1,921.09 is: 2,882.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.10 : 8,429.91 = 1,921.09 : x
  2. Step 2: Convert to fraction form
    5,619.10/8,429.91 = 1,921.09/x
  3. Step 3: Cross multiply
    5,619.10x = 8,429.91 × 1,921.09
  4. Step 4: Simplify right side
    5,619.10x = 16,194,615.80
  5. Step 5: Solve for x
    x = 16,194,615.80/5,619.10
  6. Step 6: Final answer
    x = 2,882.07

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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.