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Finding the Fourth Proportional to 8,618.35, 12,916.58 and 4,457.58

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Solution

The fourth proportional to 8,618.35, 12,916.58 and 4,457.58 is: 6,680.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.35 : 12,916.58 = 4,457.58 : x
  2. Step 2: Convert to fraction form
    8,618.35/12,916.58 = 4,457.58/x
  3. Step 3: Cross multiply
    8,618.35x = 12,916.58 × 4,457.58
  4. Step 4: Simplify right side
    8,618.35x = 57,576,624.09
  5. Step 5: Solve for x
    x = 57,576,624.09/8,618.35
  6. Step 6: Final answer
    x = 6,680.71

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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.