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Finding the Fourth Proportional to 2,576.41, 3,864.61 and 628.59

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Solution

The fourth proportional to 2,576.41, 3,864.61 and 628.59 is: 942.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,576.41 : 3,864.61 = 628.59 : x
  2. Step 2: Convert to fraction form
    2,576.41/3,864.61 = 628.59/x
  3. Step 3: Cross multiply
    2,576.41x = 3,864.61 × 628.59
  4. Step 4: Simplify right side
    2,576.41x = 2,429,270.48
  5. Step 5: Solve for x
    x = 2,429,270.48/2,576.41
  6. Step 6: Final answer
    x = 942.89

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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.