Home / 1,408.10-2,112.52-530.61

Finding the Fourth Proportional to 1,408.10, 2,112.52 and 530.61

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Solution

The fourth proportional to 1,408.10, 2,112.52 and 530.61 is: 796.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.10 : 2,112.52 = 530.61 : x
  2. Step 2: Convert to fraction form
    1,408.10/2,112.52 = 530.61/x
  3. Step 3: Cross multiply
    1,408.10x = 2,112.52 × 530.61
  4. Step 4: Simplify right side
    1,408.10x = 1,120,921.58
  5. Step 5: Solve for x
    x = 1,120,921.58/1,408.10
  6. Step 6: Final answer
    x = 796.05

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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.