Home / 2,558.28-3,529.80-1,439

Finding the Fourth Proportional to 2,558.28, 3,529.80 and 1,439

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Solution

The fourth proportional to 2,558.28, 3,529.80 and 1,439 is: 1,985.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,558.28 : 3,529.80 = 1,439 : x
  2. Step 2: Convert to fraction form
    2,558.28/3,529.80 = 1,439/x
  3. Step 3: Cross multiply
    2,558.28x = 3,529.80 × 1,439
  4. Step 4: Simplify right side
    2,558.28x = 5,079,382.20
  5. Step 5: Solve for x
    x = 5,079,382.20/2,558.28
  6. Step 6: Final answer
    x = 1,985.47

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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.