Home / 8,621.33-12,934.78-4,235.72

Finding the Fourth Proportional to 8,621.33, 12,934.78 and 4,235.72

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Solution

The fourth proportional to 8,621.33, 12,934.78 and 4,235.72 is: 6,354.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.33 : 12,934.78 = 4,235.72 : x
  2. Step 2: Convert to fraction form
    8,621.33/12,934.78 = 4,235.72/x
  3. Step 3: Cross multiply
    8,621.33x = 12,934.78 × 4,235.72
  4. Step 4: Simplify right side
    8,621.33x = 54,788,031.08
  5. Step 5: Solve for x
    x = 54,788,031.08/8,621.33
  6. Step 6: Final answer
    x = 6,354.94

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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.