Home / 8,720.55-12,036.09-5,183.08

Finding the Fourth Proportional to 8,720.55, 12,036.09 and 5,183.08

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Solution

The fourth proportional to 8,720.55, 12,036.09 and 5,183.08 is: 7,153.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.55 : 12,036.09 = 5,183.08 : x
  2. Step 2: Convert to fraction form
    8,720.55/12,036.09 = 5,183.08/x
  3. Step 3: Cross multiply
    8,720.55x = 12,036.09 × 5,183.08
  4. Step 4: Simplify right side
    8,720.55x = 62,384,006.70
  5. Step 5: Solve for x
    x = 62,384,006.70/8,720.55
  6. Step 6: Final answer
    x = 7,153.68

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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.