Home / 4,281.09-6,420.35-1,815.87

Finding the Fourth Proportional to 4,281.09, 6,420.35 and 1,815.87

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Solution

The fourth proportional to 4,281.09, 6,420.35 and 1,815.87 is: 2,723.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,281.09 : 6,420.35 = 1,815.87 : x
  2. Step 2: Convert to fraction form
    4,281.09/6,420.35 = 1,815.87/x
  3. Step 3: Cross multiply
    4,281.09x = 6,420.35 × 1,815.87
  4. Step 4: Simplify right side
    4,281.09x = 11,658,520.95
  5. Step 5: Solve for x
    x = 11,658,520.95/4,281.09
  6. Step 6: Final answer
    x = 2,723.26

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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.