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Finding the Fourth Proportional to 8,316.54, 12,451.05 and 6,339.87

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Solution

The fourth proportional to 8,316.54, 12,451.05 and 6,339.87 is: 9,491.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.54 : 12,451.05 = 6,339.87 : x
  2. Step 2: Convert to fraction form
    8,316.54/12,451.05 = 6,339.87/x
  3. Step 3: Cross multiply
    8,316.54x = 12,451.05 × 6,339.87
  4. Step 4: Simplify right side
    8,316.54x = 78,938,038.36
  5. Step 5: Solve for x
    x = 78,938,038.36/8,316.54
  6. Step 6: Final answer
    x = 9,491.69

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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.