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Finding the Fourth Proportional to 2,672.78, 3,688.47 and 1,624.94

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Solution

The fourth proportional to 2,672.78, 3,688.47 and 1,624.94 is: 2,242.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.78 : 3,688.47 = 1,624.94 : x
  2. Step 2: Convert to fraction form
    2,672.78/3,688.47 = 1,624.94/x
  3. Step 3: Cross multiply
    2,672.78x = 3,688.47 × 1,624.94
  4. Step 4: Simplify right side
    2,672.78x = 5,993,542.44
  5. Step 5: Solve for x
    x = 5,993,542.44/2,672.78
  6. Step 6: Final answer
    x = 2,242.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.