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Finding the Fourth Proportional to 8,457.02, 12,684.99 and 2,913.02

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Solution

The fourth proportional to 8,457.02, 12,684.99 and 2,913.02 is: 4,369.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.02 : 12,684.99 = 2,913.02 : x
  2. Step 2: Convert to fraction form
    8,457.02/12,684.99 = 2,913.02/x
  3. Step 3: Cross multiply
    8,457.02x = 12,684.99 × 2,913.02
  4. Step 4: Simplify right side
    8,457.02x = 36,951,629.57
  5. Step 5: Solve for x
    x = 36,951,629.57/8,457.02
  6. Step 6: Final answer
    x = 4,369.34

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Double scale
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Similar ratio
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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.