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Finding the Fourth Proportional to 2,579.41, 3,869.11 and 631.59

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Solution

The fourth proportional to 2,579.41, 3,869.11 and 631.59 is: 947.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.41 : 3,869.11 = 631.59 : x
  2. Step 2: Convert to fraction form
    2,579.41/3,869.11 = 631.59/x
  3. Step 3: Cross multiply
    2,579.41x = 3,869.11 × 631.59
  4. Step 4: Simplify right side
    2,579.41x = 2,443,691.18
  5. Step 5: Solve for x
    x = 2,443,691.18/2,579.41
  6. Step 6: Final answer
    x = 947.38

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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.