Home / 4,285.89-6,431.25-1,977.39

Finding the Fourth Proportional to 4,285.89, 6,431.25 and 1,977.39

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Solution

The fourth proportional to 4,285.89, 6,431.25 and 1,977.39 is: 2,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.89 : 6,431.25 = 1,977.39 : x
  2. Step 2: Convert to fraction form
    4,285.89/6,431.25 = 1,977.39/x
  3. Step 3: Cross multiply
    4,285.89x = 6,431.25 × 1,977.39
  4. Step 4: Simplify right side
    4,285.89x = 12,717,089.44
  5. Step 5: Solve for x
    x = 12,717,089.44/4,285.89
  6. Step 6: Final answer
    x = 2,967.20

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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.