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Finding the Fourth Proportional to 2,642.58, 3,960.63 and 2,318.58

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Solution

The fourth proportional to 2,642.58, 3,960.63 and 2,318.58 is: 3,475.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.58 : 3,960.63 = 2,318.58 : x
  2. Step 2: Convert to fraction form
    2,642.58/3,960.63 = 2,318.58/x
  3. Step 3: Cross multiply
    2,642.58x = 3,960.63 × 2,318.58
  4. Step 4: Simplify right side
    2,642.58x = 9,183,037.51
  5. Step 5: Solve for x
    x = 9,183,037.51/2,642.58
  6. Step 6: Final answer
    x = 3,475.03

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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.