Home / 8,172.12-11,277.90-6,285.72

Finding the Fourth Proportional to 8,172.12, 11,277.90 and 6,285.72

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Solution

The fourth proportional to 8,172.12, 11,277.90 and 6,285.72 is: 8,674.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.12 : 11,277.90 = 6,285.72 : x
  2. Step 2: Convert to fraction form
    8,172.12/11,277.90 = 6,285.72/x
  3. Step 3: Cross multiply
    8,172.12x = 11,277.90 × 6,285.72
  4. Step 4: Simplify right side
    8,172.12x = 70,889,721.59
  5. Step 5: Solve for x
    x = 70,889,721.59/8,172.12
  6. Step 6: Final answer
    x = 8,674.58

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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.