Home / 2,688.49-4,027.34-1,372.19

Finding the Fourth Proportional to 2,688.49, 4,027.34 and 1,372.19

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Solution

The fourth proportional to 2,688.49, 4,027.34 and 1,372.19 is: 2,055.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.49 : 4,027.34 = 1,372.19 : x
  2. Step 2: Convert to fraction form
    2,688.49/4,027.34 = 1,372.19/x
  3. Step 3: Cross multiply
    2,688.49x = 4,027.34 × 1,372.19
  4. Step 4: Simplify right side
    2,688.49x = 5,526,251.25
  5. Step 5: Solve for x
    x = 5,526,251.25/2,688.49
  6. Step 6: Final answer
    x = 2,055.53

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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.