Home / 8,720.75-12,035.68-5,183.98

Finding the Fourth Proportional to 8,720.75, 12,035.68 and 5,183.98

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Solution

The fourth proportional to 8,720.75, 12,035.68 and 5,183.98 is: 7,154.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.75 : 12,035.68 = 5,183.98 : x
  2. Step 2: Convert to fraction form
    8,720.75/12,035.68 = 5,183.98/x
  3. Step 3: Cross multiply
    8,720.75x = 12,035.68 × 5,183.98
  4. Step 4: Simplify right side
    8,720.75x = 62,392,681.36
  5. Step 5: Solve for x
    x = 62,392,681.36/8,720.75
  6. Step 6: Final answer
    x = 7,154.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.