Home / 1,399.68-2,087.28-1,366.56

Finding the Fourth Proportional to 1,399.68, 2,087.28 and 1,366.56

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Solution

The fourth proportional to 1,399.68, 2,087.28 and 1,366.56 is: 2,037.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399.68 : 2,087.28 = 1,366.56 : x
  2. Step 2: Convert to fraction form
    1,399.68/2,087.28 = 1,366.56/x
  3. Step 3: Cross multiply
    1,399.68x = 2,087.28 × 1,366.56
  4. Step 4: Simplify right side
    1,399.68x = 2,852,393.36
  5. Step 5: Solve for x
    x = 2,852,393.36/1,399.68
  6. Step 6: Final answer
    x = 2,037.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.