Home / 6,420.98-9,633.31-3,790.89

Finding the Fourth Proportional to 6,420.98, 9,633.31 and 3,790.89

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Solution

The fourth proportional to 6,420.98, 9,633.31 and 3,790.89 is: 5,687.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.98 : 9,633.31 = 3,790.89 : x
  2. Step 2: Convert to fraction form
    6,420.98/9,633.31 = 3,790.89/x
  3. Step 3: Cross multiply
    6,420.98x = 9,633.31 × 3,790.89
  4. Step 4: Simplify right side
    6,420.98x = 36,518,809.07
  5. Step 5: Solve for x
    x = 36,518,809.07/6,420.98
  6. Step 6: Final answer
    x = 5,687.42

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1.5x scale

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.