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Finding the Fourth Proportional to 2,339.85, 3,509.77 and 1,607.21

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Solution

The fourth proportional to 2,339.85, 3,509.77 and 1,607.21 is: 2,410.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,339.85 : 3,509.77 = 1,607.21 : x
  2. Step 2: Convert to fraction form
    2,339.85/3,509.77 = 1,607.21/x
  3. Step 3: Cross multiply
    2,339.85x = 3,509.77 × 1,607.21
  4. Step 4: Simplify right side
    2,339.85x = 5,640,915.87
  5. Step 5: Solve for x
    x = 5,640,915.87/2,339.85
  6. Step 6: Final answer
    x = 2,410.80

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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.