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Finding the Fourth Proportional to 8,457.72, 11,670.39 and 7,517.58

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Solution

The fourth proportional to 8,457.72, 11,670.39 and 7,517.58 is: 10,373.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.72 : 11,670.39 = 7,517.58 : x
  2. Step 2: Convert to fraction form
    8,457.72/11,670.39 = 7,517.58/x
  3. Step 3: Cross multiply
    8,457.72x = 11,670.39 × 7,517.58
  4. Step 4: Simplify right side
    8,457.72x = 87,733,090.46
  5. Step 5: Solve for x
    x = 87,733,090.46/8,457.72
  6. Step 6: Final answer
    x = 10,373.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.