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Finding the Fourth Proportional to 2,424.37, 3,636.74 and 780.96

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Solution

The fourth proportional to 2,424.37, 3,636.74 and 780.96 is: 1,171.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,424.37 : 3,636.74 = 780.96 : x
  2. Step 2: Convert to fraction form
    2,424.37/3,636.74 = 780.96/x
  3. Step 3: Cross multiply
    2,424.37x = 3,636.74 × 780.96
  4. Step 4: Simplify right side
    2,424.37x = 2,840,164.06
  5. Step 5: Solve for x
    x = 2,840,164.06/2,424.37
  6. Step 6: Final answer
    x = 1,171.51

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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.