Home / 8,328.42-12,491.76-3,134.70

Finding the Fourth Proportional to 8,328.42, 12,491.76 and 3,134.70

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Solution

The fourth proportional to 8,328.42, 12,491.76 and 3,134.70 is: 4,701.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,328.42 : 12,491.76 = 3,134.70 : x
  2. Step 2: Convert to fraction form
    8,328.42/12,491.76 = 3,134.70/x
  3. Step 3: Cross multiply
    8,328.42x = 12,491.76 × 3,134.70
  4. Step 4: Simplify right side
    8,328.42x = 39,157,920.07
  5. Step 5: Solve for x
    x = 39,157,920.07/8,328.42
  6. Step 6: Final answer
    x = 4,701.72

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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.