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Finding the Fourth Proportional to 2,408.24, 3,612.50 and 869.24

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Solution

The fourth proportional to 2,408.24, 3,612.50 and 869.24 is: 1,303.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.24 : 3,612.50 = 869.24 : x
  2. Step 2: Convert to fraction form
    2,408.24/3,612.50 = 869.24/x
  3. Step 3: Cross multiply
    2,408.24x = 3,612.50 × 869.24
  4. Step 4: Simplify right side
    2,408.24x = 3,140,129.50
  5. Step 5: Solve for x
    x = 3,140,129.50/2,408.24
  6. Step 6: Final answer
    x = 1,303.91

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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.