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Finding the Fourth Proportional to 2,624.21, 3,935.60 and 774.84

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Solution

The fourth proportional to 2,624.21, 3,935.60 and 774.84 is: 1,162.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,624.21 : 3,935.60 = 774.84 : x
  2. Step 2: Convert to fraction form
    2,624.21/3,935.60 = 774.84/x
  3. Step 3: Cross multiply
    2,624.21x = 3,935.60 × 774.84
  4. Step 4: Simplify right side
    2,624.21x = 3,049,460.30
  5. Step 5: Solve for x
    x = 3,049,460.30/2,624.21
  6. Step 6: Final answer
    x = 1,162.05

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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.