Home / 8,631.26-12,953.30-6,415.22

Finding the Fourth Proportional to 8,631.26, 12,953.30 and 6,415.22

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Solution

The fourth proportional to 8,631.26, 12,953.30 and 6,415.22 is: 9,627.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.26 : 12,953.30 = 6,415.22 : x
  2. Step 2: Convert to fraction form
    8,631.26/12,953.30 = 6,415.22/x
  3. Step 3: Cross multiply
    8,631.26x = 12,953.30 × 6,415.22
  4. Step 4: Simplify right side
    8,631.26x = 83,098,172.38
  5. Step 5: Solve for x
    x = 83,098,172.38/8,631.26
  6. Step 6: Final answer
    x = 9,627.59

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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.