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Finding the Fourth Proportional to 3,640.66, 5,461.53 and 1,885.12

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Solution

The fourth proportional to 3,640.66, 5,461.53 and 1,885.12 is: 2,827.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.66 : 5,461.53 = 1,885.12 : x
  2. Step 2: Convert to fraction form
    3,640.66/5,461.53 = 1,885.12/x
  3. Step 3: Cross multiply
    3,640.66x = 5,461.53 × 1,885.12
  4. Step 4: Simplify right side
    3,640.66x = 10,295,639.43
  5. Step 5: Solve for x
    x = 10,295,639.43/3,640.66
  6. Step 6: Final answer
    x = 2,827.96

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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.