Home / 1,392.32-2,087.57-558.83

Finding the Fourth Proportional to 1,392.32, 2,087.57 and 558.83

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Solution

The fourth proportional to 1,392.32, 2,087.57 and 558.83 is: 837.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.32 : 2,087.57 = 558.83 : x
  2. Step 2: Convert to fraction form
    1,392.32/2,087.57 = 558.83/x
  3. Step 3: Cross multiply
    1,392.32x = 2,087.57 × 558.83
  4. Step 4: Simplify right side
    1,392.32x = 1,166,603.36
  5. Step 5: Solve for x
    x = 1,166,603.36/1,392.32
  6. Step 6: Final answer
    x = 837.88

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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.