Home / 1,408.39-2,112.75-586.56

Finding the Fourth Proportional to 1,408.39, 2,112.75 and 586.56

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Solution

The fourth proportional to 1,408.39, 2,112.75 and 586.56 is: 879.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.39 : 2,112.75 = 586.56 : x
  2. Step 2: Convert to fraction form
    1,408.39/2,112.75 = 586.56/x
  3. Step 3: Cross multiply
    1,408.39x = 2,112.75 × 586.56
  4. Step 4: Simplify right side
    1,408.39x = 1,239,254.64
  5. Step 5: Solve for x
    x = 1,239,254.64/1,408.39
  6. Step 6: Final answer
    x = 879.91

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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.