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Finding the Fourth Proportional to 5,615.92, 8,425.11 and 1,720.63

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Solution

The fourth proportional to 5,615.92, 8,425.11 and 1,720.63 is: 2,581.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.92 : 8,425.11 = 1,720.63 : x
  2. Step 2: Convert to fraction form
    5,615.92/8,425.11 = 1,720.63/x
  3. Step 3: Cross multiply
    5,615.92x = 8,425.11 × 1,720.63
  4. Step 4: Simplify right side
    5,615.92x = 14,496,497.02
  5. Step 5: Solve for x
    x = 14,496,497.02/5,615.92
  6. Step 6: Final answer
    x = 2,581.32

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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.