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Finding the Fourth Proportional to 3,165.64, 4,748.01 and 1,085.61

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Solution

The fourth proportional to 3,165.64, 4,748.01 and 1,085.61 is: 1,628.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.64 : 4,748.01 = 1,085.61 : x
  2. Step 2: Convert to fraction form
    3,165.64/4,748.01 = 1,085.61/x
  3. Step 3: Cross multiply
    3,165.64x = 4,748.01 × 1,085.61
  4. Step 4: Simplify right side
    3,165.64x = 5,154,463.40
  5. Step 5: Solve for x
    x = 5,154,463.40/3,165.64
  6. Step 6: Final answer
    x = 1,628.26

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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.