Home / 2,672.87-3,688.33-1,553.45

Finding the Fourth Proportional to 2,672.87, 3,688.33 and 1,553.45

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Solution

The fourth proportional to 2,672.87, 3,688.33 and 1,553.45 is: 2,143.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.87 : 3,688.33 = 1,553.45 : x
  2. Step 2: Convert to fraction form
    2,672.87/3,688.33 = 1,553.45/x
  3. Step 3: Cross multiply
    2,672.87x = 3,688.33 × 1,553.45
  4. Step 4: Simplify right side
    2,672.87x = 5,729,636.24
  5. Step 5: Solve for x
    x = 5,729,636.24/2,672.87
  6. Step 6: Final answer
    x = 2,143.63

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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.