Home / 1,439.34-2,155.77-1,372.38

Finding the Fourth Proportional to 1,439.34, 2,155.77 and 1,372.38

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Solution

The fourth proportional to 1,439.34, 2,155.77 and 1,372.38 is: 2,055.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.34 : 2,155.77 = 1,372.38 : x
  2. Step 2: Convert to fraction form
    1,439.34/2,155.77 = 1,372.38/x
  3. Step 3: Cross multiply
    1,439.34x = 2,155.77 × 1,372.38
  4. Step 4: Simplify right side
    1,439.34x = 2,958,535.63
  5. Step 5: Solve for x
    x = 2,958,535.63/1,439.34
  6. Step 6: Final answer
    x = 2,055.48

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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.