Home / 2,587.85-3,571.28-1,408.99

Finding the Fourth Proportional to 2,587.85, 3,571.28 and 1,408.99

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Solution

The fourth proportional to 2,587.85, 3,571.28 and 1,408.99 is: 1,944.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.85 : 3,571.28 = 1,408.99 : x
  2. Step 2: Convert to fraction form
    2,587.85/3,571.28 = 1,408.99/x
  3. Step 3: Cross multiply
    2,587.85x = 3,571.28 × 1,408.99
  4. Step 4: Simplify right side
    2,587.85x = 5,031,897.81
  5. Step 5: Solve for x
    x = 5,031,897.81/2,587.85
  6. Step 6: Final answer
    x = 1,944.43

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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.