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Finding the Fourth Proportional to 3,240.64, 4,835.67 and 2,891.57

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Solution

The fourth proportional to 3,240.64, 4,835.67 and 2,891.57 is: 4,314.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.64 : 4,835.67 = 2,891.57 : x
  2. Step 2: Convert to fraction form
    3,240.64/4,835.67 = 2,891.57/x
  3. Step 3: Cross multiply
    3,240.64x = 4,835.67 × 2,891.57
  4. Step 4: Simplify right side
    3,240.64x = 13,982,678.30
  5. Step 5: Solve for x
    x = 13,982,678.30/3,240.64
  6. Step 6: Final answer
    x = 4,314.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.