Home / 2,430.45-3,644.39-786.79

Finding the Fourth Proportional to 2,430.45, 3,644.39 and 786.79

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Solution

The fourth proportional to 2,430.45, 3,644.39 and 786.79 is: 1,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.45 : 3,644.39 = 786.79 : x
  2. Step 2: Convert to fraction form
    2,430.45/3,644.39 = 786.79/x
  3. Step 3: Cross multiply
    2,430.45x = 3,644.39 × 786.79
  4. Step 4: Simplify right side
    2,430.45x = 2,867,369.61
  5. Step 5: Solve for x
    x = 2,867,369.61/2,430.45
  6. Step 6: Final answer
    x = 1,179.77

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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.