Home / 8,720.46-12,035.39-5,185.62

Finding the Fourth Proportional to 8,720.46, 12,035.39 and 5,185.62

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Solution

The fourth proportional to 8,720.46, 12,035.39 and 5,185.62 is: 7,156.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.46 : 12,035.39 = 5,185.62 : x
  2. Step 2: Convert to fraction form
    8,720.46/12,035.39 = 5,185.62/x
  3. Step 3: Cross multiply
    8,720.46x = 12,035.39 × 5,185.62
  4. Step 4: Simplify right side
    8,720.46x = 62,410,933.16
  5. Step 5: Solve for x
    x = 62,410,933.16/8,720.46
  6. Step 6: Final answer
    x = 7,156.84

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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.