Home / 8,171.47-12,257.61-4,905.55

Finding the Fourth Proportional to 8,171.47, 12,257.61 and 4,905.55

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Solution

The fourth proportional to 8,171.47, 12,257.61 and 4,905.55 is: 7,358.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,171.47 : 12,257.61 = 4,905.55 : x
  2. Step 2: Convert to fraction form
    8,171.47/12,257.61 = 4,905.55/x
  3. Step 3: Cross multiply
    8,171.47x = 12,257.61 × 4,905.55
  4. Step 4: Simplify right side
    8,171.47x = 60,130,318.74
  5. Step 5: Solve for x
    x = 60,130,318.74/8,171.47
  6. Step 6: Final answer
    x = 7,358.57

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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.