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Finding the Fourth Proportional to 2,640.53, 3,643.84 and 1,461.44

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Solution

The fourth proportional to 2,640.53, 3,643.84 and 1,461.44 is: 2,016.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.53 : 3,643.84 = 1,461.44 : x
  2. Step 2: Convert to fraction form
    2,640.53/3,643.84 = 1,461.44/x
  3. Step 3: Cross multiply
    2,640.53x = 3,643.84 × 1,461.44
  4. Step 4: Simplify right side
    2,640.53x = 5,325,253.53
  5. Step 5: Solve for x
    x = 5,325,253.53/2,640.53
  6. Step 6: Final answer
    x = 2,016.74

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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.