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Finding the Fourth Proportional to 3,457.76, 4,771.68 and 1,885.76

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Solution

The fourth proportional to 3,457.76, 4,771.68 and 1,885.76 is: 2,602.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,457.76 : 4,771.68 = 1,885.76 : x
  2. Step 2: Convert to fraction form
    3,457.76/4,771.68 = 1,885.76/x
  3. Step 3: Cross multiply
    3,457.76x = 4,771.68 × 1,885.76
  4. Step 4: Simplify right side
    3,457.76x = 8,998,243.28
  5. Step 5: Solve for x
    x = 8,998,243.28/3,457.76
  6. Step 6: Final answer
    x = 2,602.33

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Half scale
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Double scale
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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.