Home / 5,615.38-8,423.34-1,720.09

Finding the Fourth Proportional to 5,615.38, 8,423.34 and 1,720.09

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Solution

The fourth proportional to 5,615.38, 8,423.34 and 1,720.09 is: 2,580.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.38 : 8,423.34 = 1,720.09 : x
  2. Step 2: Convert to fraction form
    5,615.38/8,423.34 = 1,720.09/x
  3. Step 3: Cross multiply
    5,615.38x = 8,423.34 × 1,720.09
  4. Step 4: Simplify right side
    5,615.38x = 14,488,902.90
  5. Step 5: Solve for x
    x = 14,488,902.90/5,615.38
  6. Step 6: Final answer
    x = 2,580.22

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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.